31141031 has 4 divisors (see below), whose sum is σ = 31161864. Its totient is φ = 31120200.

The previous prime is 31141007. The next prime is 31141067. The reversal of 31141031 is 13014113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31141031 - 2²² = 26946727 is a prime.

It is a super-2 number, since 2×31141031² = 1939527623485922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31140997 and 31141015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31141001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7985 + ... + 11226.

It is an arithmetic number, because the mean of its divisors is an integer number (7790466).

Almost surely, 2^31141031 is an apocalyptic number.

31141031 is a deficient number, since it is larger than the sum of its proper divisors (20833).

31141031 is a wasteful number, since it uses less digits than its factorization.

31141031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20832.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 31141031 is about 5580.4149487292. The cubic root of 31141031 is about 314.6137232029.

Adding to 31141031 its reverse (13014113), we get a palindrome (44155144).

The spelling of 31141031 in words is "thirty-one million, one hundred forty-one thousand, thirty-one".