101231245503 has 20 divisors (see below), whose sum is σ = 151231729968. Its totient is φ = 67483147680.

The previous prime is 101231245501. The next prime is 101231245573. The reversal of 101231245503 is 305542132101.

101231245503 is a `hidden beast` number, since 10 + 1 + 23 + 124 + 5 + 503 = 666.

It is not a de Polignac number, because 101231245503 - 2¹ = 101231245501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101231245501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1669843 + ... + 1729403.

Almost surely, 2^101231245503 is an apocalyptic number.

101231245503 is a deficient number, since it is larger than the sum of its proper divisors (50000484465).

101231245503 is an equidigital number, since it uses as much as digits as its factorization.

101231245503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80556 (or 80547 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 101231245503 its reverse (305542132101), we get a palindrome (406773377604).

The spelling of 101231245503 in words is "one hundred one billion, two hundred thirty-one million, two hundred forty-five thousand, five hundred three".