212931511285 has 32 divisors (see below), whose sum is σ = 272512574208. Its totient is φ = 159381235200.

The previous prime is 212931511279. The next prime is 212931511291. The reversal of 212931511285 is 582115139212.

It is an interprime number because it is at equal distance from previous prime (212931511279) and next prime (212931511291).

It is not a de Polignac number, because 212931511285 - 2¹⁵ = 212931478517 is a prime.

It is a super-2 number, since 2×212931511285² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 853609 + ... + 1074481.

It is an arithmetic number, because the mean of its divisors is an integer number (8516017944).

Almost surely, 2^212931511285 is an apocalyptic number.

It is an amenable number.

212931511285 is a deficient number, since it is larger than the sum of its proper divisors (59581062923).

212931511285 is a wasteful number, since it uses less digits than its factorization.

212931511285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221085.

The product of its digits is 43200, while the sum is 40.

The spelling of 212931511285 in words is "two hundred twelve billion, nine hundred thirty-one million, five hundred eleven thousand, two hundred eighty-five".