103431111042 has 64 divisors (see below), whose sum is σ = 240711174144. Its totient is φ = 29017422720.

The previous prime is 103431111037. The next prime is 103431111079. The reversal of 103431111042 is 240111134301.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 822067 + ... + 939497.

It is an arithmetic number, because the mean of its divisors is an integer number (3761112096).

Almost surely, 2^103431111042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103431111042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120355587072).

103431111042 is an abundant number, since it is smaller than the sum of its proper divisors (137280063102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103431111042 is a wasteful number, since it uses less digits than its factorization.

103431111042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117823.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 103431111042 its reverse (240111134301), we get a palindrome (343542245343).

The spelling of 103431111042 in words is "one hundred three billion, four hundred thirty-one million, one hundred eleven thousand, forty-two".