31260542 has 16 divisors (see below), whose sum is σ = 49324032. Its totient is φ = 14830200.

The previous prime is 31260533. The next prime is 31260547. The reversal of 31260542 is 24506213.

It is a super-2 number, since 2×31260542² = 1954442972267528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31260547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3167 + ... + 8517.

It is an arithmetic number, because the mean of its divisors is an integer number (3082752).

Almost surely, 2^31260542 is an apocalyptic number.

31260542 is a deficient number, since it is larger than the sum of its proper divisors (18063490).

31260542 is a wasteful number, since it uses less digits than its factorization.

31260542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5503.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 31260542 is about 5591.1127693868. The cubic root of 31260542 is about 315.0156773922.

Adding to 31260542 its reverse (24506213), we get a palindrome (55766755).

The spelling of 31260542 in words is "thirty-one million, two hundred sixty thousand, five hundred forty-two".