2137122231531 has 48 divisors (see below), whose sum is σ = 3694425068160. Its totient is φ = 1088883129600.

The previous prime is 2137122231509. The next prime is 2137122231533. The reversal of 2137122231531 is 1351322217312.

It is not a de Polignac number, because 2137122231531 - 2⁵ = 2137122231499 is a prime.

It is a super-2 number, since 2×2137122231531² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2137122231492 and 2137122231501.

It is not an unprimeable number, because it can be changed into a prime (2137122231533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22457545 + ... + 22552506.

It is an arithmetic number, because the mean of its divisors is an integer number (76967188920).

Almost surely, 2^{2137122231531} is an apocalyptic number.

2137122231531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2137122231531 is a deficient number, since it is larger than the sum of its proper divisors (1557302836629).

2137122231531 is a wasteful number, since it uses less digits than its factorization.

2137122231531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45010104 (or 45010097 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

Adding to 2137122231531 its reverse (1351322217312), we get a palindrome (3488444448843).

The spelling of 2137122231531 in words is "two trillion, one hundred thirty-seven billion, one hundred twenty-two million, two hundred thirty-one thousand, five hundred thirty-one".