31234403402 has 8 divisors (see below), whose sum is σ = 47193588036. Its totient is φ = 15503207392.

The previous prime is 31234403401. The next prime is 31234403413. The reversal of 31234403402 is 20430443213.

It can be written as a sum of positive squares in 2 ways, for example, as 30593857921 + 640545481 = 174911^2 + 25309^2 .

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

It is not an unprimeable number, because it can be changed into a prime (31234403401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56996813 + ... + 56997360.

Almost surely, 2^31234403402 is an apocalyptic number.

31234403402 is a deficient number, since it is larger than the sum of its proper divisors (15959184634).

31234403402 is a wasteful number, since it uses less digits than its factorization.

31234403402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113994312.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 31234403402 its reverse (20430443213), we get a palindrome (51664846615).

The spelling of 31234403402 in words is "thirty-one billion, two hundred thirty-four million, four hundred three thousand, four hundred two".