231401320311 has 8 divisors (see below), whose sum is σ = 352611535744. Its totient is φ = 132229325880.

The previous prime is 231401320301. The next prime is 231401320313. The reversal of 231401320311 is 113023104132.

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

It is not a de Polignac number, because 231401320311 - 2¹³ = 231401312119 is a prime.

It is a super-2 number, since 2×231401320311² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 11019110491 = 231401320311 / (2 + 3 + 1 + 4 + 0 + 1 + 3 + 2 + 0 + 3 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231401320313) 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, 5509555225 + ... + 5509555266.

It is an arithmetic number, because the mean of its divisors is an integer number (44076441968).

Almost surely, 2^231401320311 is an apocalyptic number.

231401320311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231401320311 is a deficient number, since it is larger than the sum of its proper divisors (121210215433).

231401320311 is a wasteful number, since it uses less digits than its factorization.

231401320311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11019110501.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 231401320311 its reverse (113023104132), we get a palindrome (344424424443).

The spelling of 231401320311 in words is "two hundred thirty-one billion, four hundred one million, three hundred twenty thousand, three hundred eleven".