101123431 has 2 divisors, whose sum is σ = 101123432. Its totient is φ = 101123430.

The previous prime is 101123411. The next prime is 101123437. The reversal of 101123431 is 134321101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101123431 - 2⁷ = 101123303 is a prime.

It is a super-2 number, since 2×101123431² = 20451896594423522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101123437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50561715 + 50561716.

It is an arithmetic number, because the mean of its divisors is an integer number (50561716).

Almost surely, 2^101123431 is an apocalyptic number.

101123431 is a deficient number, since it is larger than the sum of its proper divisors (1).

101123431 is an equidigital number, since it uses as much as digits as its factorization.

101123431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 101123431 is about 10056.0146678493. The cubic root of 101123431 is about 465.8905829056.

Adding to 101123431 its reverse (134321101), we get a palindrome (235444532).

It can be divided in two parts, 1011 and 23431, that added together give a palindrome (24442).

The spelling of 101123431 in words is "one hundred one million, one hundred twenty-three thousand, four hundred thirty-one".