101231457033640 has 16 divisors (see below), whose sum is σ = 227770778325780. Its totient is φ = 40492582813440.

The previous prime is 101231457033611. The next prime is 101231457033647. The reversal of 101231457033640 is 46330754132101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 100211191386916 + 1020265646724 = 10010554^2 + 1010082^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 2530786425841 = 101231457033640 / (1 + 0 + 1 + 2 + 3 + 1 + 4 + 5 + 7 + 0 + 3 + 3 + 6 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 101231457033593 and 101231457033602.

It is not an unprimeable number, because it can be changed into a prime (101231457033647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265393212881 + ... + 1265393212960.

Almost surely, 2^{101231457033640} is an apocalyptic number.

101231457033640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101231457033640 is an abundant number, since it is smaller than the sum of its proper divisors (126539321292140).

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

101231457033640 is a wasteful number, since it uses less digits than its factorization.

101231457033640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530786425852 (or 2530786425848 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 101231457033640 in words is "one hundred one trillion, two hundred thirty-one billion, four hundred fifty-seven million, thirty-three thousand, six hundred forty".