2315542135381 has 2 divisors, whose sum is σ = 2315542135382. Its totient is φ = 2315542135380.

The previous prime is 2315542135279. The next prime is 2315542135427. The reversal of 2315542135381 is 1835312455132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2278077048900 + 37465086481 = 1509330^2 + 193559^2 .

It is a cyclic number.

It is not a de Polignac number, because 2315542135381 - 2³³ = 2306952200789 is a prime.

It is a super-2 number, since 2×2315542135381² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2315542135481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157771067690 + 1157771067691.

It is an arithmetic number, because the mean of its divisors is an integer number (1157771067691).

Almost surely, 2^{2315542135381} is an apocalyptic number.

It is an amenable number.

2315542135381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315542135381 is an equidigital number, since it uses as much as digits as its factorization.

2315542135381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432000, while the sum is 43.

The spelling of 2315542135381 in words is "two trillion, three hundred fifteen billion, five hundred forty-two million, one hundred thirty-five thousand, three hundred eighty-one".