31030123304 has 8 divisors (see below), whose sum is σ = 58181481210. Its totient is φ = 15515061648.

The previous prime is 31030123261. The next prime is 31030123339. The reversal of 31030123304 is 40332103013.

It can be written as a sum of positive squares in only one way, i.e., 25284180100 + 5745943204 = 159010^2 + 75802^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×31030123304² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1939382699 + ... + 1939382714.

Almost surely, 2^31030123304 is an apocalyptic number.

It is an amenable number.

31030123304 is a deficient number, since it is larger than the sum of its proper divisors (27151357906).

31030123304 is a wasteful number, since it uses less digits than its factorization.

31030123304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3878765419 (or 3878765415 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31030123304 its reverse (40332103013), we get a palindrome (71362226317).

The spelling of 31030123304 in words is "thirty-one billion, thirty million, one hundred twenty-three thousand, three hundred four".