31143045412 has 12 divisors (see below), whose sum is σ = 54510559600. Its totient is φ = 15568599816.

The previous prime is 31143045403. The next prime is 31143045421. The reversal of 31143045412 is 21454034113.

It is an interprime number because it is at equal distance from previous prime (31143045403) and next prime (31143045421).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706662 + ... + 749437.

Almost surely, 2^31143045412 is an apocalyptic number.

It is an amenable number.

31143045412 is a deficient number, since it is larger than the sum of its proper divisors (23367514188).

31143045412 is a wasteful number, since it uses less digits than its factorization.

31143045412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461450 (or 1461448 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 31143045412 its reverse (21454034113), we get a palindrome (52597079525).

The spelling of 31143045412 in words is "thirty-one billion, one hundred forty-three million, forty-five thousand, four hundred twelve".