231241400140221 has 6 divisors (see below), whose sum is σ = 334015355758110. Its totient is φ = 154160933426808.

The previous prime is 231241400140193. The next prime is 231241400140229. The reversal of 231241400140221 is 122041004142132.

231241400140221 is a `hidden beast` number, since 2 + 3 + 1 + 24 + 1 + 400 + 14 + 0 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 225192191024025 + 6049209116196 = 15006405^2 + 2459514^2 .

It is not a de Polignac number, because 231241400140221 - 2¹⁴ = 231241400123837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231241400140229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12846744452226 + ... + 12846744452243.

It is an arithmetic number, because the mean of its divisors is an integer number (55669225959685).

Almost surely, 2^{231241400140221} is an apocalyptic number.

It is an amenable number.

231241400140221 is a deficient number, since it is larger than the sum of its proper divisors (102773955617889).

231241400140221 is a wasteful number, since it uses less digits than its factorization.

231241400140221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25693488904475 (or 25693488904472 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 231241400140221 its reverse (122041004142132), we get a palindrome (353282404282353).

The spelling of 231241400140221 in words is "two hundred thirty-one trillion, two hundred forty-one billion, four hundred million, one hundred forty thousand, two hundred twenty-one".