131423464 has 32 divisors (see below), whose sum is σ = 265851720. Its totient is φ = 60676096.

The previous prime is 131423443. The next prime is 131423473. The reversal of 131423464 is 464324131.

It can be written as a sum of positive squares in 4 ways, for example, as 130919364 + 504100 = 11442^2 + 710^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1909 + ... + 16324.

Almost surely, 2^131423464 is an apocalyptic number.

It is an amenable number.

131423464 is an abundant number, since it is smaller than the sum of its proper divisors (134428256).

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

131423464 is a wasteful number, since it uses less digits than its factorization.

131423464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18309 (or 18305 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 131423464 is about 11464.0073272831. The cubic root of 131423464 is about 508.4219632496.

Adding to 131423464 its reverse (464324131), we get a palindrome (595747595).

The spelling of 131423464 in words is "one hundred thirty-one million, four hundred twenty-three thousand, four hundred sixty-four".