1400532431 has 4 divisors (see below), whose sum is σ = 1401966912. Its totient is φ = 1399097952.

The previous prime is 1400532401. The next prime is 1400532433. The reversal of 1400532431 is 1342350041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1342350041 = 19543 ⋅68687.

It is a cyclic number.

It is not a de Polignac number, because 1400532431 - 2²² = 1396338127 is a prime.

It is a super-2 number, since 2×1400532431² = 3922982180565539522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1400532397 and 1400532406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400532433) 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, 715775 + ... + 717728.

It is an arithmetic number, because the mean of its divisors is an integer number (350491728).

Almost surely, 2^1400532431 is an apocalyptic number.

1400532431 is a deficient number, since it is larger than the sum of its proper divisors (1434481).

1400532431 is an equidigital number, since it uses as much as digits as its factorization.

1400532431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434480.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1400532431 is about 37423.6880999187. The cubic root of 1400532431 is about 1118.8307395055.

Adding to 1400532431 its reverse (1342350041), we get a palindrome (2742882472).

The spelling of 1400532431 in words is "one billion, four hundred million, five hundred thirty-two thousand, four hundred thirty-one".