31042434402 has 24 divisors (see below), whose sum is σ = 76866980736. Its totient is φ = 8869266936.

The previous prime is 31042434391. The next prime is 31042434421. The reversal of 31042434402 is 20443424013.

It is a happy number.

31042434402 is a `hidden beast` number, since 3 + 10 + 4 + 243 + 4 + 402 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123184138 + ... + 123184389.

It is an arithmetic number, because the mean of its divisors is an integer number (3202790864).

Almost surely, 2^31042434402 is an apocalyptic number.

31042434402 is an abundant number, since it is smaller than the sum of its proper divisors (45824546334).

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

31042434402 is a wasteful number, since it uses less digits than its factorization.

31042434402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246368542 (or 246368539 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 31042434402 its reverse (20443424013), we get a palindrome (51485858415).

The spelling of 31042434402 in words is "thirty-one billion, forty-two million, four hundred thirty-four thousand, four hundred two".