31103030019 has 32 divisors (see below), whose sum is σ = 45512699904. Its totient is φ = 18831795840.

The previous prime is 31103030011. The next prime is 31103030047. The reversal of 31103030019 is 91003030113.

It is not a de Polignac number, because 31103030019 - 2³ = 31103030011 is a prime.

It is a super-2 number, since 2×31103030019² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31103029977 and 31103030004.

It is not an unprimeable number, because it can be changed into a prime (31103030011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23812 + ... + 250545.

It is an arithmetic number, because the mean of its divisors is an integer number (1422271872).

Almost surely, 2^31103030019 is an apocalyptic number.

31103030019 is a deficient number, since it is larger than the sum of its proper divisors (14409669885).

31103030019 is a wasteful number, since it uses less digits than its factorization.

31103030019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274467.

The product of its (nonzero) digits is 243, while the sum is 21.

The spelling of 31103030019 in words is "thirty-one billion, one hundred three million, thirty thousand, nineteen".