31238016453604 has 9 divisors (see below), whose sum is σ = 54666548355657. Its totient is φ = 15619002637704.

The previous prime is 31238016453601. The next prime is 31238016453629. The reversal of 31238016453604 is 40635461083213.

It is a happy number.

The square root of 31238016453604 is 5589098.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 119023620004 + 31118992833600 = 344998^2 + 5578440^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31238016453601) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9780922 + ... + 12575470.

Almost surely, 2^{31238016453604} is an apocalyptic number.

31238016453604 is the 5589098-th square number.

It is an amenable number.

31238016453604 is a deficient number, since it is larger than the sum of its proper divisors (23428531902053).

31238016453604 is an frugal number, since it uses more digits than its factorization.

31238016453604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5589102 (or 2794551 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 31238016453604 in words is "thirty-one trillion, two hundred thirty-eight billion, sixteen million, four hundred fifty-three thousand, six hundred four".