31301320103 has 4 divisors (see below), whose sum is σ = 32662247088. Its totient is φ = 29940393120.

The previous prime is 31301320097. The next prime is 31301320117. The reversal of 31301320103 is 30102310313.

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

It is a cyclic number.

It is not a de Polignac number, because 31301320103 - 2¹⁸ = 31301057959 is a prime.

It is a super-4 number, since 4×31301320103⁴ (a number of 43 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301320133) 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, 680463458 + ... + 680463503.

It is an arithmetic number, because the mean of its divisors is an integer number (8165561772).

Almost surely, 2^31301320103 is an apocalyptic number.

31301320103 is a deficient number, since it is larger than the sum of its proper divisors (1360926985).

31301320103 is a wasteful number, since it uses less digits than its factorization.

31301320103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360926984.

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

Adding to 31301320103 its reverse (30102310313), we get a palindrome (61403630416).

The spelling of 31301320103 in words is "thirty-one billion, three hundred one million, three hundred twenty thousand, one hundred three".