31146542 has 8 divisors (see below), whose sum is σ = 53394096. Its totient is φ = 13348512.

The previous prime is 31146541. The next prime is 31146553. The reversal of 31146542 is 24564113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31146541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1112363 + ... + 1112390.

It is an arithmetic number, because the mean of its divisors is an integer number (6674262).

Almost surely, 2^31146542 is an apocalyptic number.

31146542 is a deficient number, since it is larger than the sum of its proper divisors (22247554).

31146542 is a wasteful number, since it uses less digits than its factorization.

31146542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224762.

The product of its digits is 2880, while the sum is 26.

The square root of 31146542 is about 5580.9087073702. The cubic root of 31146542 is about 314.6322810765.

The spelling of 31146542 in words is "thirty-one million, one hundred forty-six thousand, five hundred forty-two".