131910394 has 32 divisors (see below), whose sum is σ = 254656512. Its totient is φ = 49734000.

The previous prime is 131910391. The next prime is 131910409. The reversal of 131910394 is 493019131.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (131910391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9042 + ... + 18589.

It is an arithmetic number, because the mean of its divisors is an integer number (7958016).

Almost surely, 2^131910394 is an apocalyptic number.

131910394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

131910394 is a deficient number, since it is larger than the sum of its proper divisors (122746118).

131910394 is a wasteful number, since it uses less digits than its factorization.

131910394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27682.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 131910394 is about 11485.2250304467. The cubic root of 131910394 is about 509.0490983114.

The spelling of 131910394 in words is "one hundred thirty-one million, nine hundred ten thousand, three hundred ninety-four".