131124399 has 32 divisors (see below), whose sum is σ = 208320000. Its totient is φ = 71777664.

The previous prime is 131124397. The next prime is 131124401. The reversal of 131124399 is 993421131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131124397) and next prime (131124401).

It is not a de Polignac number, because 131124399 - 2¹ = 131124397 is a prime.

It is a super-2 number, since 2×131124399² = 34387216026222402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131124397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83877 + ... + 85425.

It is an arithmetic number, because the mean of its divisors is an integer number (6510000).

Almost surely, 2^131124399 is an apocalyptic number.

131124399 is a deficient number, since it is larger than the sum of its proper divisors (77195601).

131124399 is a wasteful number, since it uses less digits than its factorization.

131124399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727.

The product of its digits is 5832, while the sum is 33.

The square root of 131124399 is about 11450.9562482790. The cubic root of 131124399 is about 508.0360182265.

The spelling of 131124399 in words is "one hundred thirty-one million, one hundred twenty-four thousand, three hundred ninety-nine".