31143412004 has 12 divisors (see below), whose sum is σ = 57706910604. Its totient is φ = 14655723264.

The previous prime is 31143411979. The next prime is 31143412033. The reversal of 31143412004 is 40021434113.

It can be written as a sum of positive squares in 2 ways, for example, as 15227066404 + 15916345600 = 123398^2 + 126160^2 .

It is a super-2 number, since 2×31143412004² (a number of 22 digits) contains 22 as substring.

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, 228995609 + ... + 228995744.

It is an arithmetic number, because the mean of its divisors is an integer number (4808909217).

Almost surely, 2^31143412004 is an apocalyptic number.

31143412004 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31143412004 is a deficient number, since it is larger than the sum of its proper divisors (26563498600).

31143412004 is a wasteful number, since it uses less digits than its factorization.

31143412004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457991374 (or 457991372 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31143412004 its reverse (40021434113), we get a palindrome (71164846117).

The spelling of 31143412004 in words is "thirty-one billion, one hundred forty-three million, four hundred twelve thousand, four".