11457831 has 32 divisors (see below), whose sum is σ = 19219968. Its totient is φ = 5898240.

The previous prime is 11457811. The next prime is 11457833. The reversal of 11457831 is 13875411.

It is not a de Polignac number, because 11457831 - 2⁵ = 11457799 is a prime.

It is a super-2 number, since 2×11457831² = 262563782449122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11457833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44455 + ... + 44711.

It is an arithmetic number, because the mean of its divisors is an integer number (600624).

Almost surely, 2^11457831 is an apocalyptic number.

11457831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11457831 is a deficient number, since it is larger than the sum of its proper divisors (7762137).

11457831 is a wasteful number, since it uses less digits than its factorization.

11457831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471.

The product of its digits is 3360, while the sum is 30.

The square root of 11457831 is about 3384.9418015676. The cubic root of 11457831 is about 225.4416411995.

The spelling of 11457831 in words is "eleven million, four hundred fifty-seven thousand, eight hundred thirty-one".