103121331 has 16 divisors (see below), whose sum is σ = 142082304. Its totient is φ = 66477024.

The previous prime is 103121329. The next prime is 103121339. The reversal of 103121331 is 133121301.

It is not a de Polignac number, because 103121331 - 2¹ = 103121329 is a prime.

It is a super-2 number, since 2×103121331² = 21268017814423122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103121331.

It is not an unprimeable number, because it can be changed into a prime (103121339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15756 + ... + 21318.

It is an arithmetic number, because the mean of its divisors is an integer number (8880144).

Almost surely, 2^103121331 is an apocalyptic number.

103121331 is a deficient number, since it is larger than the sum of its proper divisors (38960973).

103121331 is a wasteful number, since it uses less digits than its factorization.

103121331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 103121331 is about 10154.8673551160. The cubic root of 103121331 is about 468.9388023798.

Adding to 103121331 its reverse (133121301), we get a palindrome (236242632).

The spelling of 103121331 in words is "one hundred three million, one hundred twenty-one thousand, three hundred thirty-one".