123031251233541 has 36 divisors (see below), whose sum is σ = 210626470191852. Its totient is φ = 68977089627264.

The previous prime is 123031251233537. The next prime is 123031251233557. The reversal of 123031251233541 is 145332152130321.

123031251233541 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 31 + 2 + 51 + 2 + 33 + 541 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 71090546373441 + 51940704860100 = 8431521^2 + 7206990^2 .

It is not a de Polignac number, because 123031251233541 - 2² = 123031251233537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123031251233496 and 123031251233505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031251233441) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2631886336 + ... + 2631933081.

It is an arithmetic number, because the mean of its divisors is an integer number (5850735283107).

Almost surely, 2^{123031251233541} is an apocalyptic number.

It is an amenable number.

123031251233541 is a deficient number, since it is larger than the sum of its proper divisors (87595218958311).

123031251233541 is a wasteful number, since it uses less digits than its factorization.

123031251233541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5263819490 (or 5263819480 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 123031251233541 in words is "one hundred twenty-three trillion, thirty-one billion, two hundred fifty-one million, two hundred thirty-three thousand, five hundred forty-one".