31380911703 has 20 divisors (see below), whose sum is σ = 46884804120. Its totient is φ = 20917418832.

The previous prime is 31380911699. The next prime is 31380911707. The reversal of 31380911703 is 30711908313.

It is an interprime number because it is at equal distance from previous prime (31380911699) and next prime (31380911707).

It is not a de Polignac number, because 31380911703 - 2² = 31380911699 is a prime.

It is a super-2 number, since 2×31380911703² (a number of 22 digits) contains 22 as substring.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31380911707) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 583108 + ... + 634646.

It is an arithmetic number, because the mean of its divisors is an integer number (2344240206).

Almost surely, 2^31380911703 is an apocalyptic number.

31380911703 is a deficient number, since it is larger than the sum of its proper divisors (15503892417).

31380911703 is an equidigital number, since it uses as much as digits as its factorization.

31380911703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59068 (or 59059 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The spelling of 31380911703 in words is "thirty-one billion, three hundred eighty million, nine hundred eleven thousand, seven hundred three".