31312340440462 has 4 divisors (see below), whose sum is σ = 46968510660696. Its totient is φ = 15656170220230.

The previous prime is 31312340440421. The next prime is 31312340440471. The reversal of 31312340440462 is 26404404321313.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7828085110114 + ... + 7828085110117.

It is an arithmetic number, because the mean of its divisors is an integer number (11742127665174).

Almost surely, 2^{31312340440462} is an apocalyptic number.

31312340440462 is a deficient number, since it is larger than the sum of its proper divisors (15656170220234).

31312340440462 is a wasteful number, since it uses less digits than its factorization.

31312340440462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15656170220233.

The product of its (nonzero) digits is 165888, while the sum is 37.

Adding to 31312340440462 its reverse (26404404321313), we get a palindrome (57716744761775).

The spelling of 31312340440462 in words is "thirty-one trillion, three hundred twelve billion, three hundred forty million, four hundred forty thousand, four hundred sixty-two".