131423404 has 12 divisors (see below), whose sum is σ = 262846864. Its totient is φ = 56324304.

The previous prime is 131423401. The next prime is 131423423. The reversal of 131423404 is 404324131.

131423404 is an admirable number.

It is a super-2 number, since 2×131423404² = 34544222237894432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131423401) 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, 2346819 + ... + 2346874.

Almost surely, 2^131423404 is an apocalyptic number.

131423404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131423404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131423404 is a wasteful number, since it uses less digits than its factorization.

131423404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4693704 (or 4693702 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 131423404 is about 11464.0047103968. The cubic root of 131423404 is about 508.4218858780.

Adding to 131423404 its reverse (404324131), we get a palindrome (535747535).

The spelling of 131423404 in words is "one hundred thirty-one million, four hundred twenty-three thousand, four hundred four".