1231453541140 has 48 divisors (see below), whose sum is σ = 2596549756752. Its totient is φ = 490582573056.

The previous prime is 1231453541137. The next prime is 1231453541161. The reversal of 1231453541140 is 411453541321.

It can be written as a sum of positive squares in 8 ways, for example, as 75733939204 + 1155719601936 = 275198^2 + 1075044^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1231453541096 and 1231453541105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37490164 + ... + 37522996.

It is an arithmetic number, because the mean of its divisors is an integer number (54094786599).

Almost surely, 2^{1231453541140} is an apocalyptic number.

1231453541140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231453541140 is an abundant number, since it is smaller than the sum of its proper divisors (1365096215612).

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

1231453541140 is a wasteful number, since it uses less digits than its factorization.

1231453541140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40396 (or 40394 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 1231453541140 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-three million, five hundred forty-one thousand, one hundred forty".