103111112021031 has 32 divisors (see below), whose sum is σ = 154254711674880. Its totient is φ = 68067444705408.

The previous prime is 103111112021011. The next prime is 103111112021051. The reversal of 103111112021031 is 130120211111301.

103111112021031 is a `hidden beast` number, since 1 + 0 + 311 + 1 + 112 + 0 + 210 + 31 = 666.

It is an interprime number because it is at equal distance from previous prime (103111112021011) and next prime (103111112021051).

It is not a de Polignac number, because 103111112021031 - 2¹¹ = 103111112018983 is a prime.

It is a super-2 number, since 2×103111112021031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103111112020995 and 103111112021013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103111112021011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1709826 + ... + 14461871.

It is an arithmetic number, because the mean of its divisors is an integer number (4820459739840).

Almost surely, 2^{103111112021031} is an apocalyptic number.

103111112021031 is a deficient number, since it is larger than the sum of its proper divisors (51143599653849).

103111112021031 is a wasteful number, since it uses less digits than its factorization.

103111112021031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16174020 (or 16174014 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 103111112021031 its reverse (130120211111301), we get a palindrome (233231323132332).

The spelling of 103111112021031 in words is "one hundred three trillion, one hundred eleven billion, one hundred twelve million, twenty-one thousand, thirty-one".