131066940 has 96 divisors (see below), whose sum is σ = 409086720. Its totient is φ = 31159296.

The previous prime is 131066939. The next prime is 131066953. The reversal of 131066940 is 49660131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 131066898 and 131066907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15999 + ... + 22761.

It is an arithmetic number, because the mean of its divisors is an integer number (4261320).

Almost surely, 2^131066940 is an apocalyptic number.

131066940 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 131066940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204543360).

131066940 is an abundant number, since it is smaller than the sum of its proper divisors (278019780).

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

131066940 is a wasteful number, since it uses less digits than its factorization.

131066940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6811 (or 6809 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 131066940 is about 11448.4470562605. The cubic root of 131066940 is about 507.9617998845.

The spelling of 131066940 in words is "one hundred thirty-one million, sixty-six thousand, nine hundred forty".