123202531156261 has 8 divisors (see below), whose sum is σ = 124407582852800. Its totient is φ = 121997650817952.

The previous prime is 123202531156249. The next prime is 123202531156291. The reversal of 123202531156261 is 162651135202321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123202531156261 - 2¹⁵ = 123202531123493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123202531156291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41394336 + ... + 44270713.

It is an arithmetic number, because the mean of its divisors is an integer number (15550947856600).

Almost surely, 2^{123202531156261} is an apocalyptic number.

It is an amenable number.

123202531156261 is a deficient number, since it is larger than the sum of its proper divisors (1205051696539).

123202531156261 is a wasteful number, since it uses less digits than its factorization.

123202531156261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85679115.

The product of its (nonzero) digits is 129600, while the sum is 40.

Adding to 123202531156261 its reverse (162651135202321), we get a palindrome (285853666358582).

The spelling of 123202531156261 in words is "one hundred twenty-three trillion, two hundred two billion, five hundred thirty-one million, one hundred fifty-six thousand, two hundred sixty-one".