131034440 has 32 divisors (see below), whose sum is σ = 295159680. Its totient is φ = 52354752.

The previous prime is 131034389. The next prime is 131034451. The reversal of 131034440 is 44430131.

It is a happy number.

It is a super-2 number, since 2×131034440² = 34340048932227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58379 + ... + 60581.

It is an arithmetic number, because the mean of its divisors is an integer number (9223740).

Almost surely, 2^131034440 is an apocalyptic number.

131034440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131034440 is an abundant number, since it is smaller than the sum of its proper divisors (164125240).

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

131034440 is a wasteful number, since it uses less digits than its factorization.

131034440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701 (or 3697 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 131034440 is about 11447.0275617734. The cubic root of 131034440 is about 507.9198108489.

Adding to 131034440 its reverse (44430131), we get a palindrome (175464571).

The spelling of 131034440 in words is "one hundred thirty-one million, thirty-four thousand, four hundred forty".