31301101320231 has 4 divisors (see below), whose sum is σ = 41734801760312. Its totient is φ = 20867400880152.

The previous prime is 31301101320221. The next prime is 31301101320241. The reversal of 31301101320231 is 13202310110313.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (31301101320221) and next prime (31301101320241).

It is not a de Polignac number, because 31301101320231 - 2²³ = 31301092931623 is a prime.

It is a super-2 number, since 2×31301101320231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31301101320198 and 31301101320207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301101320221) 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, 5216850220036 + ... + 5216850220041.

It is an arithmetic number, because the mean of its divisors is an integer number (10433700440078).

Almost surely, 2^{31301101320231} is an apocalyptic number.

31301101320231 is a deficient number, since it is larger than the sum of its proper divisors (10433700440081).

31301101320231 is a wasteful number, since it uses less digits than its factorization.

31301101320231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10433700440080.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31301101320231 its reverse (13202310110313), we get a palindrome (44503411430544).

The spelling of 31301101320231 in words is "thirty-one trillion, three hundred one billion, one hundred one million, three hundred twenty thousand, two hundred thirty-one".