131265402 has 8 divisors (see below), whose sum is σ = 262530816. Its totient is φ = 43755132.

The previous prime is 131265391. The next prime is 131265403. The reversal of 131265402 is 204562131.

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

131265402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (131265403) 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, 10938778 + ... + 10938789.

It is an arithmetic number, because the mean of its divisors is an integer number (32816352).

Almost surely, 2^131265402 is an apocalyptic number.

131265402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131265402 is a wasteful number, since it uses less digits than its factorization.

131265402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21877572.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 131265402 is about 11457.1114160595. Note that the first 3 decimals coincide. The cubic root of 131265402 is about 508.2180564066.

It can be divided in two parts, 13126 and 5402, that added together give a triangular number (18528 = T₁₉₂).

The spelling of 131265402 in words is "one hundred thirty-one million, two hundred sixty-five thousand, four hundred two".