31212422402 has 16 divisors (see below), whose sum is σ = 53835277632. Its totient is φ = 13294685520.

The previous prime is 31212422377. The next prime is 31212422419. The reversal of 31212422402 is 20422421213.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6836549 + ... + 6841112.

It is an arithmetic number, because the mean of its divisors is an integer number (3364704852).

Almost surely, 2^31212422402 is an apocalyptic number.

31212422402 is a deficient number, since it is larger than the sum of its proper divisors (22622855230).

31212422402 is a wasteful number, since it uses less digits than its factorization.

31212422402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13677833.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 31212422402 its reverse (20422421213), we get a palindrome (51634843615).

The spelling of 31212422402 in words is "thirty-one billion, two hundred twelve million, four hundred twenty-two thousand, four hundred two".