131412231 has 6 divisors (see below), whose sum is σ = 189817680. Its totient is φ = 87608148.

The previous prime is 131412223. The next prime is 131412247. The reversal of 131412231 is 132214131.

It is not a de Polignac number, because 131412231 - 2³ = 131412223 is a prime.

It is a super-2 number, since 2×131412231² = 34538348912794722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131412221) 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, 7300671 + ... + 7300688.

It is an arithmetic number, because the mean of its divisors is an integer number (31636280).

Almost surely, 2^131412231 is an apocalyptic number.

131412231 is a deficient number, since it is larger than the sum of its proper divisors (58405449).

131412231 is a wasteful number, since it uses less digits than its factorization.

131412231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14601365 (or 14601362 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 131412231 is about 11463.5173921445. The cubic root of 131412231 is about 508.4074775901.

Adding to 131412231 its reverse (132214131), we get a palindrome (263626362).

The spelling of 131412231 in words is "one hundred thirty-one million, four hundred twelve thousand, two hundred thirty-one".