103031201231021 has 16 divisors (see below), whose sum is σ = 127106386617600. Its totient is φ = 81559931405568.

The previous prime is 103031201231003. The next prime is 103031201231033. The reversal of 103031201231021 is 120132102130301.

It is a happy number.

It is not a de Polignac number, because 103031201231021 - 2¹⁴ = 103031201214637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103031201230984 and 103031201231002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103031201237021) 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, 11033535836 + ... + 11033545173.

It is an arithmetic number, because the mean of its divisors is an integer number (7944149163600).

Almost surely, 2^{103031201231021} is an apocalyptic number.

It is an amenable number.

103031201231021 is a deficient number, since it is larger than the sum of its proper divisors (24075185386579).

103031201231021 is a wasteful number, since it uses less digits than its factorization.

103031201231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22067081068.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 103031201231021 its reverse (120132102130301), we get a palindrome (223163303361322).

The spelling of 103031201231021 in words is "one hundred three trillion, thirty-one billion, two hundred one million, two hundred thirty-one thousand, twenty-one".