2152312531 has 8 divisors (see below), whose sum is σ = 2192258304. Its totient is φ = 2112634440.

The previous prime is 2152312511. The next prime is 2152312537. The reversal of 2152312531 is 1352132512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2152312531 - 2⁵ = 2152312499 is a prime.

It is a super-2 number, since 2×2152312531² = 9264898462199251922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2152312496 and 2152312505.

It is not an unprimeable number, because it can be changed into a prime (2152312537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50655 + ... + 82888.

It is an arithmetic number, because the mean of its divisors is an integer number (274032288).

Almost surely, 2^2152312531 is an apocalyptic number.

2152312531 is a deficient number, since it is larger than the sum of its proper divisors (39945773).

2152312531 is a wasteful number, since it uses less digits than its factorization.

2152312531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133841.

The product of its digits is 1800, while the sum is 25.

The square root of 2152312531 is about 46393.0224387246. The cubic root of 2152312531 is about 1291.1254587285.

The spelling of 2152312531 in words is "two billion, one hundred fifty-two million, three hundred twelve thousand, five hundred thirty-one".