31030103230203 has 32 divisors (see below), whose sum is σ = 51583103470080. Its totient is φ = 16119348456960.

The previous prime is 31030103230177. The next prime is 31030103230267. The reversal of 31030103230203 is 30203230103013.

It is not a de Polignac number, because 31030103230203 - 2¹⁷ = 31030103099131 is a prime.

It is a super-2 number, since 2×31030103230203² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 31030103230203.

It is not an unprimeable number, because it can be changed into a prime (31030103231203) 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, 20597683 + ... + 22052771.

It is an arithmetic number, because the mean of its divisors is an integer number (1611971983440).

Almost surely, 2^{31030103230203} is an apocalyptic number.

31030103230203 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31030103230203 is a deficient number, since it is larger than the sum of its proper divisors (20553000239877).

31030103230203 is a wasteful number, since it uses less digits than its factorization.

31030103230203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547427.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31030103230203 its reverse (30203230103013), we get a palindrome (61233333333216).

The spelling of 31030103230203 in words is "thirty-one trillion, thirty billion, one hundred three million, two hundred thirty thousand, two hundred three".