13477431 has 16 divisors (see below), whose sum is σ = 20280960. Its totient is φ = 7885920.

The previous prime is 13477427. The next prime is 13477463.

13477431 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13477431 - 2² = 13477427 is a prime.

It is a super-2 number, since 2×13477431² = 363282292719522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13477031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6085 + ... + 7998.

It is an arithmetic number, because the mean of its divisors is an integer number (1267560).

Almost surely, 2^13477431 is an apocalyptic number.

13477431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13477431 is a deficient number, since it is larger than the sum of its proper divisors (6803529).

13477431 is a wasteful number, since it uses less digits than its factorization.

13477431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14126.

The product of its digits is 7056, while the sum is 30.

The square root of 13477431 is about 3671.1620775989. The cubic root of 13477431 is about 237.9773946941.

It can be divided in two parts, 1347 and 7431, that added together give a palindrome (8778).

The spelling of 13477431 in words is "thirteen million, four hundred seventy-seven thousand, four hundred thirty-one".