101040431 has 4 divisors (see below), whose sum is σ = 101811864. Its totient is φ = 100269000.

The previous prime is 101040427. The next prime is 101040463. The reversal of 101040431 is 134040101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 101040431 - 2² = 101040427 is a prime.

It is a super-2 number, since 2×101040431² = 20418337393331522, which 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 (101040481) 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, 385520 + ... + 385781.

It is an arithmetic number, because the mean of its divisors is an integer number (25452966).

Almost surely, 2^101040431 is an apocalyptic number.

101040431 is a deficient number, since it is larger than the sum of its proper divisors (771433).

101040431 is an equidigital number, since it uses as much as digits as its factorization.

101040431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771432.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 101040431 is about 10051.8869372869. The cubic root of 101040431 is about 465.7630835965.

Adding to 101040431 its reverse (134040101), we get a palindrome (235080532).

The spelling of 101040431 in words is "one hundred one million, forty thousand, four hundred thirty-one".