31423330204504 has 32 divisors (see below), whose sum is σ = 67337126341920. Its totient is φ = 13466857764096.

The previous prime is 31423330204501. The next prime is 31423330204571. The reversal of 31423330204504 is 40540203332413.

It is a super-2 number, since 2×31423330204504² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31423330204504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423330204501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3219109 + ... + 8556244.

It is an arithmetic number, because the mean of its divisors is an integer number (2104285198185).

Almost surely, 2^{31423330204504} is an apocalyptic number.

It is an amenable number.

31423330204504 is an abundant number, since it is smaller than the sum of its proper divisors (35913796137416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31423330204504 is a wasteful number, since it uses less digits than its factorization.

31423330204504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11823019 (or 11823015 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 31423330204504 its reverse (40540203332413), we get a palindrome (71963533536917).

The spelling of 31423330204504 in words is "thirty-one trillion, four hundred twenty-three billion, three hundred thirty million, two hundred four thousand, five hundred four".