131412331 has 4 divisors (see below), whose sum is σ = 131717664. Its totient is φ = 131107000.

The previous prime is 131412301. The next prime is 131412373. The reversal of 131412331 is 133214131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133214131 = 1171 ⋅113761.

It is a cyclic number.

It is not a de Polignac number, because 131412331 - 2⁵ = 131412299 is a prime.

It is a super-2 number, since 2×131412331² = 34538401477707122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131412299 and 131412308.

It is not an unprimeable number, because it can be changed into a prime (131412301) 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, 152020 + ... + 152881.

It is an arithmetic number, because the mean of its divisors is an integer number (32929416).

Almost surely, 2^131412331 is an apocalyptic number.

131412331 is a deficient number, since it is larger than the sum of its proper divisors (305333).

131412331 is an equidigital number, since it uses as much as digits as its factorization.

131412331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305332.

The product of its digits is 216, while the sum is 19.

The square root of 131412331 is about 11463.5217538067. The cubic root of 131412331 is about 508.4076065500.

Adding to 131412331 its reverse (133214131), we get a palindrome (264626462).

The spelling of 131412331 in words is "one hundred thirty-one million, four hundred twelve thousand, three hundred thirty-one".