131151478 has 4 divisors (see below), whose sum is σ = 196727220. Its totient is φ = 65575738.

The previous prime is 131151437. The next prime is 131151491. The reversal of 131151478 is 874151131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32787868 + ... + 32787871.

It is an arithmetic number, because the mean of its divisors is an integer number (49181805).

Almost surely, 2^131151478 is an apocalyptic number.

131151478 is a deficient number, since it is larger than the sum of its proper divisors (65575742).

131151478 is an equidigital number, since it uses as much as digits as its factorization.

131151478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65575741.

The product of its digits is 3360, while the sum is 31.

The square root of 131151478 is about 11452.1385775758. The cubic root of 131151478 is about 508.0709879717.

The spelling of 131151478 in words is "one hundred thirty-one million, one hundred fifty-one thousand, four hundred seventy-eight".