31312302033142 has 32 divisors (see below), whose sum is σ = 50801268746592. Its totient is φ = 14389021972224.

The previous prime is 31312302033137. The next prime is 31312302033151. The reversal of 31312302033142 is 24133020321313.

It is a super-2 number, since 2×31312302033142² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31312302033142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119314513 + ... + 119576659.

It is an arithmetic number, because the mean of its divisors is an integer number (1587539648331).

Almost surely, 2^{31312302033142} is an apocalyptic number.

31312302033142 is a deficient number, since it is larger than the sum of its proper divisors (19488966713450).

31312302033142 is a wasteful number, since it uses less digits than its factorization.

31312302033142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282112.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 31312302033142 its reverse (24133020321313), we get a palindrome (55445322354455).

The spelling of 31312302033142 in words is "thirty-one trillion, three hundred twelve billion, three hundred two million, thirty-three thousand, one hundred forty-two".