31302131103 has 10 divisors (see below), whose sum is σ = 46759973744. Its totient is φ = 20868087348.

The previous prime is 31302131101. The next prime is 31302131111. The reversal of 31302131103 is 30113120313.

It is a happy number.

It is not a de Polignac number, because 31302131103 - 2¹ = 31302131101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302131101) 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 9 ways as a sum of consecutive naturals, for example, 193222951 + ... + 193223112.

Almost surely, 2^31302131103 is an apocalyptic number.

31302131103 is a deficient number, since it is larger than the sum of its proper divisors (15457842641).

31302131103 is an equidigital number, since it uses as much as digits as its factorization.

31302131103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386446075 (or 386446066 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31302131103 its reverse (30113120313), we get a palindrome (61415251416).

The spelling of 31302131103 in words is "thirty-one billion, three hundred two million, one hundred thirty-one thousand, one hundred three".