103120031 has 8 divisors (see below), whose sum is σ = 117956640. Its totient is φ = 88309728.

The previous prime is 103120007. The next prime is 103120057. The reversal of 103120031 is 130021301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103120031 is a prime.

It is a super-2 number, since 2×103120031² = 21267481586881922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103119994 and 103120021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103120001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2705 + ... + 14613.

It is an arithmetic number, because the mean of its divisors is an integer number (14744580).

Almost surely, 2^103120031 is an apocalyptic number.

103120031 is a deficient number, since it is larger than the sum of its proper divisors (14836609).

103120031 is a wasteful number, since it uses less digits than its factorization.

103120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13153.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 103120031 is about 10154.8033462003. The cubic root of 103120031 is about 468.9368318111.

Adding to 103120031 its reverse (130021301), we get a palindrome (233141332).

The spelling of 103120031 in words is "one hundred three million, one hundred twenty thousand, thirty-one".