31004003377 has 2 divisors, whose sum is σ = 31004003378. Its totient is φ = 31004003376.

The previous prime is 31004003363. The next prime is 31004003383. The reversal of 31004003377 is 77330040013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30838520881 + 165482496 = 175609^2 + 12864^2 .

It is an emirp because it is prime and its reverse (77330040013) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31004003377 is a prime.

It is a super-2 number, since 2×31004003377² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31004003357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15502001688 + 15502001689.

It is an arithmetic number, because the mean of its divisors is an integer number (15502001689).

Almost surely, 2^31004003377 is an apocalyptic number.

It is an amenable number.

31004003377 is a deficient number, since it is larger than the sum of its proper divisors (1).

31004003377 is an equidigital number, since it uses as much as digits as its factorization.

31004003377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 28.

The spelling of 31004003377 in words is "thirty-one billion, four million, three thousand, three hundred seventy-seven".