313020138652544 has 16 divisors (see below), whose sum is σ = 623594807472120. Its totient is φ = 156510069326208.

The previous prime is 313020138652541. The next prime is 313020138652567. The reversal of 313020138652544 is 445256831020313.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313020138652541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222734916484 + ... + 1222734916739.

Almost surely, 2^{313020138652544} is an apocalyptic number.

It is an amenable number.

313020138652544 is a deficient number, since it is larger than the sum of its proper divisors (310574668819576).

313020138652544 is an equidigital number, since it uses as much as digits as its factorization.

313020138652544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445469833237 (or 2445469833225 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 47.

Adding to 313020138652544 its reverse (445256831020313), we get a palindrome (758276969672857).

The spelling of 313020138652544 in words is "three hundred thirteen trillion, twenty billion, one hundred thirty-eight million, six hundred fifty-two thousand, five hundred forty-four".