31213233253 has 2 divisors, whose sum is σ = 31213233254. Its totient is φ = 31213233252.

The previous prime is 31213233187. The next prime is 31213233319. The reversal of 31213233253 is 35233231213.

It is a balanced prime because it is at equal distance from previous prime (31213233187) and next prime (31213233319).

It can be written as a sum of positive squares in only one way, i.e., 28055580004 + 3157653249 = 167498^2 + 56193^2 .

It is a cyclic number.

It is not a de Polignac number, because 31213233253 - 2⁹ = 31213232741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31213233353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606616626 + 15606616627.

It is an arithmetic number, because the mean of its divisors is an integer number (15606616627).

Almost surely, 2^31213233253 is an apocalyptic number.

It is an amenable number.

31213233253 is a deficient number, since it is larger than the sum of its proper divisors (1).

31213233253 is an equidigital number, since it uses as much as digits as its factorization.

31213233253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 28.

Adding to 31213233253 its reverse (35233231213), we get a palindrome (66446464466).

The spelling of 31213233253 in words is "thirty-one billion, two hundred thirteen million, two hundred thirty-three thousand, two hundred fifty-three".