131450040 has 160 divisors (see below), whose sum is σ = 457380000. Its totient is φ = 33820416.

The previous prime is 131450009. The next prime is 131450041. The reversal of 131450040 is 40054131.

It is a happy number.

It is a super-2 number, since 2×131450040² = 34558226032003200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 131449995 and 131450022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131450041) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 93261 + ... + 94659.

It is an arithmetic number, because the mean of its divisors is an integer number (2858625).

Almost surely, 2^131450040 is an apocalyptic number.

131450040 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 131450040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228690000).

131450040 is an abundant number, since it is smaller than the sum of its proper divisors (325929960).

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

131450040 is a wasteful number, since it uses less digits than its factorization.

131450040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 131450040 is about 11465.1663747196. The cubic root of 131450040 is about 508.4562313856.

The spelling of 131450040 in words is "one hundred thirty-one million, four hundred fifty thousand, forty".