131001237400 has 96 divisors (see below), whose sum is σ = 333494369280. Its totient is φ = 47460816000.

The previous prime is 131001237391. The next prime is 131001237491. The reversal of 131001237400 is 4732100131.

It is a super-2 number, since 2×131001237400² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 486337 + ... + 706063.

It is an arithmetic number, because the mean of its divisors is an integer number (3473899680).

Almost surely, 2^131001237400 is an apocalyptic number.

131001237400 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 131001237400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166747184640).

131001237400 is an abundant number, since it is smaller than the sum of its proper divisors (202493131880).

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

131001237400 is a wasteful number, since it uses less digits than its factorization.

131001237400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220025 (or 220016 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 131001237400 its reverse (4732100131), we get a palindrome (135733337531).

The spelling of 131001237400 in words is "one hundred thirty-one billion, one million, two hundred thirty-seven thousand, four hundred".