101240211431 has 4 divisors (see below), whose sum is σ = 102242589864. Its totient is φ = 100237833000.

The previous prime is 101240211421. The next prime is 101240211461. The reversal of 101240211431 is 134112042101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101240211431 is a prime.

It is a super-2 number, since 2×101240211431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101240211421) 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, 501189065 + ... + 501189266.

It is an arithmetic number, because the mean of its divisors is an integer number (25560647466).

Almost surely, 2^101240211431 is an apocalyptic number.

101240211431 is a deficient number, since it is larger than the sum of its proper divisors (1002378433).

101240211431 is a wasteful number, since it uses less digits than its factorization.

101240211431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002378432.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 101240211431 its reverse (134112042101), we get a palindrome (235352253532).

The spelling of 101240211431 in words is "one hundred one billion, two hundred forty million, two hundred eleven thousand, four hundred thirty-one".