2137531 has 8 divisors (see below), whose sum is σ = 2343024. Its totient is φ = 1933920.

The previous prime is 2137517. The next prime is 2137547. The reversal of 2137531 is 1357312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2137531 is a prime.

It is a super-2 number, since 2×2137531² = 9138077551922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2137571) 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, 3181 + ... + 3793.

It is an arithmetic number, because the mean of its divisors is an integer number (292878).

2^2137531 is an apocalyptic number.

2137531 is a deficient number, since it is larger than the sum of its proper divisors (205493).

2137531 is a wasteful number, since it uses less digits than its factorization.

2137531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941.

The product of its digits is 630, while the sum is 22.

The square root of 2137531 is about 1462.0297534592. The cubic root of 2137531 is about 128.8162960169.

It can be divided in two parts, 213 and 7531, that added together give a square (7744 = 88²).

The spelling of 2137531 in words is "two million, one hundred thirty-seven thousand, five hundred thirty-one".