231310320421616 has 40 divisors (see below), whose sum is σ = 452135374620864. Its totient is φ = 114630249000960.

The previous prime is 231310320421591. The next prime is 231310320421627. The reversal of 231310320421616 is 616124023013132.

It is a super-3 number, since 3×231310320421616³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154219160 + ... + 155711816.

Almost surely, 2^{231310320421616} is an apocalyptic number.

It is an amenable number.

231310320421616 is a deficient number, since it is larger than the sum of its proper divisors (220825054199248).

231310320421616 is a wasteful number, since it uses less digits than its factorization.

231310320421616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578489 (or 1578483 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

Adding to 231310320421616 its reverse (616124023013132), we get a palindrome (847434343434748).

The spelling of 231310320421616 in words is "two hundred thirty-one trillion, three hundred ten billion, three hundred twenty million, four hundred twenty-one thousand, six hundred sixteen".