31231321031323 has 16 divisors (see below), whose sum is σ = 37693537814016. Its totient is φ = 25297299910080.

The previous prime is 31231321031249. The next prime is 31231321031327. The reversal of 31231321031323 is 32313012313213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31231321031323 - 2³³ = 31222731096731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31231321031291 and 31231321031300.

It is not an unprimeable number, because it can be changed into a prime (31231321031327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1168561098 + ... + 1168587823.

It is an arithmetic number, because the mean of its divisors is an integer number (2355846113376).

Almost surely, 2^{31231321031323} is an apocalyptic number.

31231321031323 is a deficient number, since it is larger than the sum of its proper divisors (6462216782693).

31231321031323 is a wasteful number, since it uses less digits than its factorization.

31231321031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337149034.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 31231321031323 its reverse (32313012313213), we get a palindrome (63544333344536).

The spelling of 31231321031323 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred twenty-one million, thirty-one thousand, three hundred twenty-three".