131626406 has 4 divisors (see below), whose sum is σ = 197439612. Its totient is φ = 65813202.

The previous prime is 131626399. The next prime is 131626421. The reversal of 131626406 is 604626131.

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, 32906600 + ... + 32906603.

It is an arithmetic number, because the mean of its divisors is an integer number (49359903).

Almost surely, 2^131626406 is an apocalyptic number.

131626406 is a deficient number, since it is larger than the sum of its proper divisors (65813206).

131626406 is an equidigital number, since it uses as much as digits as its factorization.

131626406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65813205.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 131626406 is about 11472.8551808170. The cubic root of 131626406 is about 508.6835276682.

The spelling of 131626406 in words is "one hundred thirty-one million, six hundred twenty-six thousand, four hundred six".