31444401293 has 2 divisors, whose sum is σ = 31444401294. Its totient is φ = 31444401292.

The previous prime is 31444401251. The next prime is 31444401301. The reversal of 31444401293 is 39210444413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26088064324 + 5356336969 = 161518^2 + 73187^2 .

It is a cyclic number.

It is not a de Polignac number, because 31444401293 - 2⁶ = 31444401229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31444401223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15722200646 + 15722200647.

It is an arithmetic number, because the mean of its divisors is an integer number (15722200647).

Almost surely, 2^31444401293 is an apocalyptic number.

It is an amenable number.

31444401293 is a deficient number, since it is larger than the sum of its proper divisors (1).

31444401293 is an equidigital number, since it uses as much as digits as its factorization.

31444401293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 31444401293 in words is "thirty-one billion, four hundred forty-four million, four hundred one thousand, two hundred ninety-three".