213515154031131 has 24 divisors (see below), whose sum is σ = 324647952492240. Its totient is φ = 134849587579200.

The previous prime is 213515154031121. The next prime is 213515154031163. The reversal of 213515154031131 is 131130451515312.

213515154031131 is a `hidden beast` number, since 2 + 1 + 3 + 5 + 1 + 51 + 540 + 31 + 1 + 31 = 666.

It is not a de Polignac number, because 213515154031131 - 2¹³ = 213515154022939 is a prime.

It is a super-2 number, since 2×213515154031131² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213515154031111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1440261 + ... + 20714841.

It is an arithmetic number, because the mean of its divisors is an integer number (13526998020510).

Almost surely, 2^{213515154031131} is an apocalyptic number.

213515154031131 is a deficient number, since it is larger than the sum of its proper divisors (111132798461109).

213515154031131 is a wasteful number, since it uses less digits than its factorization.

213515154031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19339387 (or 19339384 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 213515154031131 in words is "two hundred thirteen trillion, five hundred fifteen billion, one hundred fifty-four million, thirty-one thousand, one hundred thirty-one".