31045742 has 32 divisors (see below), whose sum is σ = 58662912. Its totient is φ = 11993184.

The previous prime is 31045739. The next prime is 31045793. The reversal of 31045742 is 24754013.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5843 + ... + 9809.

It is an arithmetic number, because the mean of its divisors is an integer number (1833216).

Almost surely, 2^31045742 is an apocalyptic number.

31045742 is a deficient number, since it is larger than the sum of its proper divisors (27617170).

31045742 is a wasteful number, since it uses less digits than its factorization.

31045742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4032.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 31045742 is about 5571.8706015126. The cubic root of 31045742 is about 314.2924979449.

Adding to 31045742 its reverse (24754013), we get a palindrome (55799755).

The spelling of 31045742 in words is "thirty-one million, forty-five thousand, seven hundred forty-two".