31000122004 has 6 divisors (see below), whose sum is σ = 54250213514. Its totient is φ = 15500061000.

The previous prime is 31000121983. The next prime is 31000122029. The reversal of 31000122004 is 40022100013.

It can be written as a sum of positive squares in only one way, i.e., 21473971600 + 9526150404 = 146540^2 + 97602^2 .

It is a super-2 number, since 2×31000122004² (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, 3875015247 + ... + 3875015254.

Almost surely, 2^31000122004 is an apocalyptic number.

It is an amenable number.

31000122004 is a deficient number, since it is larger than the sum of its proper divisors (23250091510).

31000122004 is a wasteful number, since it uses less digits than its factorization.

31000122004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7750030505 (or 7750030503 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 31000122004 its reverse (40022100013), we get a palindrome (71022222017).

The spelling of 31000122004 in words is "thirty-one billion, one hundred twenty-two thousand, four".