131334440 has 16 divisors (see below), whose sum is σ = 295502580. Its totient is φ = 52533760.

The previous prime is 131334431. The next prime is 131334449. The reversal of 131334440 is 44433131.

It is an interprime number because it is at equal distance from previous prime (131334431) and next prime (131334449).

It can be written as a sum of positive squares in 2 ways, for example, as 130462084 + 872356 = 11422^2 + 934^2 .

It is a super-2 number, since 2×131334440² = 34497470260227200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131334449) 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, 1641641 + ... + 1641720.

Almost surely, 2^131334440 is an apocalyptic number.

131334440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131334440 is an abundant number, since it is smaller than the sum of its proper divisors (164168140).

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

131334440 is a wasteful number, since it uses less digits than its factorization.

131334440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283372 (or 3283368 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 131334440 is about 11460.1239085797. The cubic root of 131334440 is about 508.3071385469.

Adding to 131334440 its reverse (44433131), we get a palindrome (175767571).

It can be divided in two parts, 1313 and 34440, that added together give a palindrome (35753).

The spelling of 131334440 in words is "one hundred thirty-one million, three hundred thirty-four thousand, four hundred forty".