103203143031 has 4 divisors (see below), whose sum is σ = 137604190712. Its totient is φ = 68802095352.

The previous prime is 103203143027. The next prime is 103203143039. The reversal of 103203143031 is 130341302301.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 103203143031 - 2² = 103203143027 is a prime.

It is a super-2 number, since 2×103203143031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103203142989 and 103203143007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103203143039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17200523836 + ... + 17200523841.

It is an arithmetic number, because the mean of its divisors is an integer number (34401047678).

Almost surely, 2^103203143031 is an apocalyptic number.

103203143031 is a deficient number, since it is larger than the sum of its proper divisors (34401047681).

103203143031 is an equidigital number, since it uses as much as digits as its factorization.

103203143031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34401047680.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 103203143031 its reverse (130341302301), we get a palindrome (233544445332).

The spelling of 103203143031 in words is "one hundred three billion, two hundred three million, one hundred forty-three thousand, thirty-one".