31424372742 has 32 divisors (see below), whose sum is σ = 72044169984. Its totient is φ = 8951263200.

The previous prime is 31424372731. The next prime is 31424372743. The reversal of 31424372742 is 24727342413.

It is a self number, because there is not a number n which added to its sum of digits gives 31424372742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31424372743) 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 15 ways as a sum of consecutive naturals, for example, 1116309 + ... + 1144112.

It is an arithmetic number, because the mean of its divisors is an integer number (2251380312).

Almost surely, 2^31424372742 is an apocalyptic number.

31424372742 is an abundant number, since it is smaller than the sum of its proper divisors (40619797242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31424372742 is a wasteful number, since it uses less digits than its factorization.

31424372742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260764.

The product of its digits is 225792, while the sum is 39.

The spelling of 31424372742 in words is "thirty-one billion, four hundred twenty-four million, three hundred seventy-two thousand, seven hundred forty-two".