1401433431 has 16 divisors (see below), whose sum is σ = 1902030720. Its totient is φ = 917592480.

The previous prime is 1401433393. The next prime is 1401433441. The reversal of 1401433431 is 1343341041.

It is not a de Polignac number, because 1401433431 - 2⁷ = 1401433303 is a prime.

It is a super-2 number, since 2×1401433431² = 3928031323048863522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401433441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225441 + ... + 231573.

It is an arithmetic number, because the mean of its divisors is an integer number (118876920).

Almost surely, 2^1401433431 is an apocalyptic number.

1401433431 is a deficient number, since it is larger than the sum of its proper divisors (500597289).

1401433431 is a wasteful number, since it uses less digits than its factorization.

1401433431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7486.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1401433431 is about 37435.7239946017. The cubic root of 1401433431 is about 1119.0706126611.

Adding to 1401433431 its reverse (1343341041), we get a palindrome (2744774472).

The spelling of 1401433431 in words is "one billion, four hundred one million, four hundred thirty-three thousand, four hundred thirty-one".