103123221031 has 16 divisors (see below), whose sum is σ = 112711500000. Its totient is φ = 93976073856.

The previous prime is 103123221013. The next prime is 103123221067. The reversal of 103123221031 is 130122321301.

It is a cyclic number.

It is not a de Polignac number, because 103123221031 - 2²¹ = 103121123879 is a prime.

It is a super-2 number, since 2×103123221031² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103123221631) 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, 199656 + ... + 496093.

It is an arithmetic number, because the mean of its divisors is an integer number (7044468750).

Almost surely, 2^103123221031 is an apocalyptic number.

103123221031 is a deficient number, since it is larger than the sum of its proper divisors (9588278969).

103123221031 is a wasteful number, since it uses less digits than its factorization.

103123221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696066.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 103123221031 its reverse (130122321301), we get a palindrome (233245542332).

The spelling of 103123221031 in words is "one hundred three billion, one hundred twenty-three million, two hundred twenty-one thousand, thirty-one".