31143333666377 has 2 divisors, whose sum is σ = 31143333666378. Its totient is φ = 31143333666376.

The previous prime is 31143333666323. The next prime is 31143333666463. The reversal of 31143333666377 is 77366633334113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29628110535241 + 1515223131136 = 5443171^2 + 1230944^2 .

It is a cyclic number.

It is not a de Polignac number, because 31143333666377 - 2⁴² = 26745287155273 is a prime.

It is a super-2 number, since 2×31143333666377² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31143333666077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571666833188 + 15571666833189.

It is an arithmetic number, because the mean of its divisors is an integer number (15571666833189).

Almost surely, 2^{31143333666377} is an apocalyptic number.

It is an amenable number.

31143333666377 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143333666377 is an equidigital number, since it uses as much as digits as its factorization.

31143333666377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30862944, while the sum is 56.

The spelling of 31143333666377 in words is "thirty-one trillion, one hundred forty-three billion, three hundred thirty-three million, six hundred sixty-six thousand, three hundred seventy-seven".