31232131033 has 2 divisors, whose sum is σ = 31232131034. Its totient is φ = 31232131032.

The previous prime is 31232131001. The next prime is 31232131039. The reversal of 31232131033 is 33013123213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19235748249 + 11996382784 = 138693^2 + 109528^2 .

It is a cyclic number.

It is not a de Polignac number, because 31232131033 - 2⁵ = 31232131001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31232130995 and 31232131013.

It is not a weakly prime, because it can be changed into another prime (31232131039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616065516 + 15616065517.

It is an arithmetic number, because the mean of its divisors is an integer number (15616065517).

Almost surely, 2^31232131033 is an apocalyptic number.

It is an amenable number.

31232131033 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232131033 is an equidigital number, since it uses as much as digits as its factorization.

31232131033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31232131033 its reverse (33013123213), we get a palindrome (64245254246).

The spelling of 31232131033 in words is "thirty-one billion, two hundred thirty-two million, one hundred thirty-one thousand, thirty-three".