2131551312 has 80 divisors (see below), whose sum is σ = 6268313088. Its totient is φ = 617837440.

The previous prime is 2131551311. The next prime is 2131551349.

2131551312 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131551311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75618 + ... + 99905.

Almost surely, 2^2131551312 is an apocalyptic number.

2131551312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2131551312 is an abundant number, since it is smaller than the sum of its proper divisors (4136761776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131551312 is a wasteful number, since it uses less digits than its factorization.

2131551312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175568 (or 175562 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 2131551312 is about 46168.7265581367. The cubic root of 2131551312 is about 1286.9606373978.

It can be divided in two parts, 21315 and 51312, that added together give a palindrome (72627).

The spelling of 2131551312 in words is "two billion, one hundred thirty-one million, five hundred fifty-one thousand, three hundred twelve".