231401223124 has 12 divisors (see below), whose sum is σ = 407050339444. Its totient is φ = 115101126144.

The previous prime is 231401223121. The next prime is 231401223187. The reversal of 231401223124 is 421322104132.

It can be written as a sum of positive squares in 2 ways, for example, as 58361862724 + 173039360400 = 241582^2 + 415980^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231401223121) 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, 149870487 + ... + 149872030.

Almost surely, 2^231401223124 is an apocalyptic number.

It is an amenable number.

231401223124 is a deficient number, since it is larger than the sum of its proper divisors (175649116320).

231401223124 is a wasteful number, since it uses less digits than its factorization.

231401223124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299742714 (or 299742712 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 231401223124 its reverse (421322104132), we get a palindrome (652723327256).

The spelling of 231401223124 in words is "two hundred thirty-one billion, four hundred one million, two hundred twenty-three thousand, one hundred twenty-four".