315255421357 has 2 divisors, whose sum is σ = 315255421358. Its totient is φ = 315255421356.

The previous prime is 315255421331. The next prime is 315255421421. The reversal of 315255421357 is 753124552513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258944605956 + 56310815401 = 508866^2 + 237299^2 .

It is a cyclic number.

It is not a de Polignac number, because 315255421357 - 2³⁵ = 280895682989 is a prime.

It is a super-2 number, since 2×315255421357² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315255421057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157627710678 + 157627710679.

It is an arithmetic number, because the mean of its divisors is an integer number (157627710679).

Almost surely, 2^315255421357 is an apocalyptic number.

It is an amenable number.

315255421357 is a deficient number, since it is larger than the sum of its proper divisors (1).

315255421357 is an equidigital number, since it uses as much as digits as its factorization.

315255421357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630000, while the sum is 43.

The spelling of 315255421357 in words is "three hundred fifteen billion, two hundred fifty-five million, four hundred twenty-one thousand, three hundred fifty-seven".