215350252531 has 2 divisors, whose sum is σ = 215350252532. Its totient is φ = 215350252530.

The previous prime is 215350252519. The next prime is 215350252547. The reversal of 215350252531 is 135252053512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215350252531 - 2⁵ = 215350252499 is a prime.

It is a super-2 number, since 2×215350252531² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (215350252031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107675126265 + 107675126266.

It is an arithmetic number, because the mean of its divisors is an integer number (107675126266).

Almost surely, 2^215350252531 is an apocalyptic number.

215350252531 is a deficient number, since it is larger than the sum of its proper divisors (1).

215350252531 is an equidigital number, since it uses as much as digits as its factorization.

215350252531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45000, while the sum is 34.

The spelling of 215350252531 in words is "two hundred fifteen billion, three hundred fifty million, two hundred fifty-two thousand, five hundred thirty-one".