31021230041 has 2 divisors, whose sum is σ = 31021230042. Its totient is φ = 31021230040.

The previous prime is 31021229999. The next prime is 31021230091. The reversal of 31021230041 is 14003212013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30738855625 + 282374416 = 175325^2 + 16804^2 .

It is a cyclic number.

It is not a de Polignac number, because 31021230041 - 2²² = 31017035737 is a prime.

It is not a weakly prime, because it can be changed into another prime (31021230091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510615020 + 15510615021.

It is an arithmetic number, because the mean of its divisors is an integer number (15510615021).

Almost surely, 2^31021230041 is an apocalyptic number.

It is an amenable number.

31021230041 is a deficient number, since it is larger than the sum of its proper divisors (1).

31021230041 is an equidigital number, since it uses as much as digits as its factorization.

31021230041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31021230041 its reverse (14003212013), we get a palindrome (45024442054).

The spelling of 31021230041 in words is "thirty-one billion, twenty-one million, two hundred thirty thousand, forty-one".