101242203431 has 4 divisors (see below), whose sum is σ = 101243511600. Its totient is φ = 101240895264.

The previous prime is 101242203407. The next prime is 101242203449. The reversal of 101242203431 is 134302242101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134302242101 = 76481 ⋅1756021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101242203431 is a prime.

It is a super-2 number, since 2×101242203431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101242203397 and 101242203406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101242203401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530171 + ... + 695388.

It is an arithmetic number, because the mean of its divisors is an integer number (25310877900).

Almost surely, 2^101242203431 is an apocalyptic number.

101242203431 is a deficient number, since it is larger than the sum of its proper divisors (1308169).

101242203431 is an equidigital number, since it uses as much as digits as its factorization.

101242203431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308168.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 101242203431 its reverse (134302242101), we get a palindrome (235544445532).

The spelling of 101242203431 in words is "one hundred one billion, two hundred forty-two million, two hundred three thousand, four hundred thirty-one".