11394531 has 6 divisors (see below), whose sum is σ = 16458780. Its totient is φ = 7596348.

The previous prime is 11394529. The next prime is 11394599. The reversal of 11394531 is 13549311.

It is not a de Polignac number, because 11394531 - 2¹ = 11394529 is a prime.

It is a super-2 number, since 2×11394531² = 259670673419922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11394495 and 11394504.

It is not an unprimeable number, because it can be changed into a prime (11394521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 633021 + ... + 633038.

It is an arithmetic number, because the mean of its divisors is an integer number (2743130).

Almost surely, 2^11394531 is an apocalyptic number.

11394531 is a deficient number, since it is larger than the sum of its proper divisors (5064249).

11394531 is a wasteful number, since it uses less digits than its factorization.

11394531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266065 (or 1266062 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 11394531 is about 3375.5786170670. The cubic root of 11394531 is about 225.0257155793.

The spelling of 11394531 in words is "eleven million, three hundred ninety-four thousand, five hundred thirty-one".