13890279331 has 2 divisors, whose sum is σ = 13890279332. Its totient is φ = 13890279330.

The previous prime is 13890279307. The next prime is 13890279353. The reversal of 13890279331 is 13397209831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13890279331 - 2¹³ = 13890271139 is a prime.

It is a super-2 number, since 2×13890279331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13890279371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6945139665 + 6945139666.

It is an arithmetic number, because the mean of its divisors is an integer number (6945139666).

Almost surely, 2^13890279331 is an apocalyptic number.

13890279331 is a deficient number, since it is larger than the sum of its proper divisors (1).

13890279331 is an equidigital number, since it uses as much as digits as its factorization.

13890279331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 13890279331 in words is "thirteen billion, eight hundred ninety million, two hundred seventy-nine thousand, three hundred thirty-one".