30203113031 has 16 divisors (see below), whose sum is σ = 37188588864. Its totient is φ = 23886987264.

The previous prime is 30203113027. The next prime is 30203113033. The reversal of 30203113031 is 13031130203.

It is not a de Polignac number, because 30203113031 - 2² = 30203113027 is a prime.

It is a super-2 number, since 2×30203113031² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30203113033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153671 + ... + 289863.

It is an arithmetic number, because the mean of its divisors is an integer number (2324286804).

Almost surely, 2^30203113031 is an apocalyptic number.

30203113031 is a deficient number, since it is larger than the sum of its proper divisors (6985475833).

30203113031 is a wasteful number, since it uses less digits than its factorization.

30203113031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138650.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 30203113031 its reverse (13031130203), we get a palindrome (43234243234).

The spelling of 30203113031 in words is "thirty billion, two hundred three million, one hundred thirteen thousand, thirty-one".