31004022004 has 6 divisors (see below), whose sum is σ = 54257038514. Its totient is φ = 15502011000.

The previous prime is 31004021957. The next prime is 31004022013. The reversal of 31004022004 is 40022040013.

It can be written as a sum of positive squares in only one way, i.e., 26356873104 + 4647148900 = 162348^2 + 68170^2 .

It is a super-2 number, since 2×31004022004² (a number of 22 digits) contains 22 as substring.

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, 3875502747 + ... + 3875502754.

Almost surely, 2^31004022004 is an apocalyptic number.

It is an amenable number.

31004022004 is a deficient number, since it is larger than the sum of its proper divisors (23253016510).

31004022004 is a wasteful number, since it uses less digits than its factorization.

31004022004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7751005505 (or 7751005503 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 31004022004 its reverse (40022040013), we get a palindrome (71026062017).

The spelling of 31004022004 in words is "thirty-one billion, four million, twenty-two thousand, four".