31454031 has 12 divisors (see below), whose sum is σ = 48786072. Its totient is φ = 17973648.

The previous prime is 31454023. The next prime is 31454053. The reversal of 31454031 is 13045413.

It is not a de Polignac number, because 31454031 - 2³ = 31454023 is a prime.

It is a super-2 number, since 2×31454031² = 1978712132297922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 31453989 and 31454007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31454081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106840 + ... + 107133.

It is an arithmetic number, because the mean of its divisors is an integer number (4065506).

Almost surely, 2^31454031 is an apocalyptic number.

31454031 is a deficient number, since it is larger than the sum of its proper divisors (17332041).

31454031 is a wasteful number, since it uses less digits than its factorization.

31454031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213990 (or 213983 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 31454031 is about 5608.3893409784. The cubic root of 31454031 is about 315.6642771890.

Adding to 31454031 its reverse (13045413), we get a palindrome (44499444).

It can be divided in two parts, 314 and 54031, that added together give a palindrome (54345).

The spelling of 31454031 in words is "thirty-one million, four hundred fifty-four thousand, thirty-one".