131123121231000 has 128 divisors (see below), whose sum is σ = 423211177771200. Its totient is φ = 33760435788800.

The previous prime is 131123121230987. The next prime is 131123121231079. The reversal of 131123121231000 is 132121321131.

It is a super-2 number, since 2×131123121231000² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 753494157 + ... + 753668156.

Almost surely, 2^{131123121231000} is an apocalyptic number.

131123121231000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131123121231000 is an abundant number, since it is smaller than the sum of its proper divisors (292088056540200).

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

131123121231000 is a wasteful number, since it uses less digits than its factorization.

131123121231000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507162366 (or 1507162352 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 131123121231000 its reverse (132121321131), we get a palindrome (131255242552131).

The spelling of 131123121231000 in words is "one hundred thirty-one trillion, one hundred twenty-three billion, one hundred twenty-one million, two hundred thirty-one thousand".