131380809390 has 96 divisors (see below), whose sum is σ = 351946498176. Its totient is φ = 33985889280.

The previous prime is 131380809367. The next prime is 131380809397. The reversal of 131380809390 is 93908083131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131380809397) 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, 340560 + ... + 615420.

It is an arithmetic number, because the mean of its divisors is an integer number (3666109356).

Almost surely, 2^131380809390 is an apocalyptic number.

131380809390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131380809390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175973249088).

131380809390 is an abundant number, since it is smaller than the sum of its proper divisors (220565688786).

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

131380809390 is a wasteful number, since it uses less digits than its factorization.

131380809390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275034 (or 275031 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 131380809390 in words is "one hundred thirty-one billion, three hundred eighty million, eight hundred nine thousand, three hundred ninety".