31003103103 has 32 divisors (see below), whose sum is σ = 47726754816. Its totient is φ = 17534769408.

The previous prime is 31003103063. The next prime is 31003103119. The reversal of 31003103103 is 30130130013.

It is not a de Polignac number, because 31003103103 - 2²¹ = 31001005951 is a prime.

It is a super-2 number, since 2×31003103103² (a number of 22 digits) contains 22 as substring.

31003103103 is a modest number, since divided by 103103 gives 31003 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31003103143) 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, 7639851 + ... + 7643907.

It is an arithmetic number, because the mean of its divisors is an integer number (1491461088).

Almost surely, 2^31003103103 is an apocalyptic number.

31003103103 is a deficient number, since it is larger than the sum of its proper divisors (16723651713).

31003103103 is a wasteful number, since it uses less digits than its factorization.

31003103103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7703.

The product of its (nonzero) digits is 81, while the sum is 15.

Adding to 31003103103 its reverse (30130130013), we get a palindrome (61133233116).

The spelling of 31003103103 in words is "thirty-one billion, three million, one hundred three thousand, one hundred three".