131427780 has 144 divisors (see below), whose sum is σ = 414883392. Its totient is φ = 31046400.

The previous prime is 131427767. The next prime is 131427781. The reversal of 131427780 is 87724131.

It is a happy number.

It is a super-2 number, since 2×131427780² = 34546522711456800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (131427781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 311970 + ... + 312390.

Almost surely, 2^131427780 is an apocalyptic number.

131427780 is a gapful number since it is divisible by the number (10) 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 131427780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207441696).

131427780 is an abundant number, since it is smaller than the sum of its proper divisors (283455612).

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

131427780 is a wasteful number, since it uses less digits than its factorization.

131427780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 131427780 is about 11464.1955670688. The cubic root of 131427780 is about 508.4275287833.

The spelling of 131427780 in words is "one hundred thirty-one million, four hundred twenty-seven thousand, seven hundred eighty".