131021220413000 has 32 divisors (see below), whose sum is σ = 306589655768760. Its totient is φ = 52408488164800.

The previous prime is 131021220412997. The next prime is 131021220413053. The reversal of 131021220413000 is 314022120131.

It can be written as a sum of positive squares in 4 ways, for example, as 51324070902724 + 79697149510276 = 7164082^2 + 8927326^2 .

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, 65510609207 + ... + 65510611206.

Almost surely, 2^{131021220413000} is an apocalyptic number.

131021220413000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131021220413000 is an abundant number, since it is smaller than the sum of its proper divisors (175568435355760).

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

131021220413000 is a wasteful number, since it uses less digits than its factorization.

131021220413000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131021220434 (or 131021220420 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 131021220413000 its reverse (314022120131), we get a palindrome (131335242533131).

The spelling of 131021220413000 in words is "one hundred thirty-one trillion, twenty-one billion, two hundred twenty million, four hundred thirteen thousand".