31440203269 has 2 divisors, whose sum is σ = 31440203270. Its totient is φ = 31440203268.

The previous prime is 31440203219. The next prime is 31440203273. The reversal of 31440203269 is 96230204413.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21507689025 + 9932514244 = 146655^2 + 99662^2 .

It is a cyclic number.

It is not a de Polignac number, because 31440203269 - 2¹³ = 31440195077 is a prime.

It is a super-2 number, since 2×31440203269² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31440203209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15720101634 + 15720101635.

It is an arithmetic number, because the mean of its divisors is an integer number (15720101635).

Almost surely, 2^31440203269 is an apocalyptic number.

It is an amenable number.

31440203269 is a deficient number, since it is larger than the sum of its proper divisors (1).

31440203269 is an equidigital number, since it uses as much as digits as its factorization.

31440203269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 31440203269 in words is "thirty-one billion, four hundred forty million, two hundred three thousand, two hundred sixty-nine".