115120213531 has 2 divisors, whose sum is σ = 115120213532. Its totient is φ = 115120213530.

The previous prime is 115120213441. The next prime is 115120213561. The reversal of 115120213531 is 135312021511.

It is a strong prime.

It is an emirp because it is prime and its reverse (135312021511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115120213531 - 2³⁵ = 80760475163 is a prime.

It is a super-2 number, since 2×115120213531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115120213496 and 115120213505.

It is not a weakly prime, because it can be changed into another prime (115120213561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57560106765 + 57560106766.

It is an arithmetic number, because the mean of its divisors is an integer number (57560106766).

Almost surely, 2^115120213531 is an apocalyptic number.

115120213531 is a deficient number, since it is larger than the sum of its proper divisors (1).

115120213531 is an equidigital number, since it uses as much as digits as its factorization.

115120213531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 25.

The spelling of 115120213531 in words is "one hundred fifteen billion, one hundred twenty million, two hundred thirteen thousand, five hundred thirty-one".