131622478 has 8 divisors (see below), whose sum is σ = 212620968. Its totient is φ = 60748824.

The previous prime is 131622473. The next prime is 131622499. The reversal of 131622478 is 874226131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131622473) 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, 2531176 + ... + 2531227.

It is an arithmetic number, because the mean of its divisors is an integer number (26577621).

Almost surely, 2^131622478 is an apocalyptic number.

131622478 is a deficient number, since it is larger than the sum of its proper divisors (80998490).

131622478 is a wasteful number, since it uses less digits than its factorization.

131622478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5062418.

The product of its digits is 16128, while the sum is 34.

The square root of 131622478 is about 11472.6839928589. The cubic root of 131622478 is about 508.6784675671.

The spelling of 131622478 in words is "one hundred thirty-one million, six hundred twenty-two thousand, four hundred seventy-eight".