131669772 has 96 divisors (see below), whose sum is σ = 359761920. Its totient is φ = 37117440.

The previous prime is 131669771. The next prime is 131669801. The reversal of 131669772 is 277966131.

131669772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (131669771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91168 + ... + 92600.

It is an arithmetic number, because the mean of its divisors is an integer number (3747520).

Almost surely, 2^131669772 is an apocalyptic number.

131669772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131669772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179880960).

131669772 is an abundant number, since it is smaller than the sum of its proper divisors (228092148).

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

131669772 is a wasteful number, since it uses less digits than its factorization.

131669772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1501 counting only the distinct ones).

The product of its digits is 95256, while the sum is 42.

The square root of 131669772 is about 11474.7449644861. The cubic root of 131669772 is about 508.7393856285.

It can be divided in two parts, 131 and 669772, that added together give a triangular number (669903 = T₁₁₅₇).

The spelling of 131669772 in words is "one hundred thirty-one million, six hundred sixty-nine thousand, seven hundred seventy-two".