2115031 has 4 divisors (see below), whose sum is σ = 2172232. Its totient is φ = 2057832.

The previous prime is 2115017. The next prime is 2115049. The reversal of 2115031 is 1305112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115031 is a prime.

It is a super-2 number, since 2×2115031² = 8946712261922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28545 + ... + 28618.

It is an arithmetic number, because the mean of its divisors is an integer number (543058).

2^2115031 is an apocalyptic number.

2115031 is a deficient number, since it is larger than the sum of its proper divisors (57201).

2115031 is an equidigital number, since it uses as much as digits as its factorization.

2115031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57200.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 2115031 is about 1454.3146152054. The cubic root of 2115031 is about 128.3627203555.

The spelling of 2115031 in words is "two million, one hundred fifteen thousand, thirty-one".