140533431 has 16 divisors (see below), whose sum is σ = 191752704. Its totient is φ = 91509824.

The previous prime is 140533429. The next prime is 140533433. The reversal of 140533431 is 134335041.

It is a happy number.

140533431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (140533429) and next prime (140533433).

It is a cyclic number.

It is not a de Polignac number, because 140533431 - 2¹ = 140533429 is a prime.

It is a super-2 number, since 2×140533431² = 39499290457263522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140533433) 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, 120256 + ... + 121418.

It is an arithmetic number, because the mean of its divisors is an integer number (11984544).

Almost surely, 2^140533431 is an apocalyptic number.

140533431 is a deficient number, since it is larger than the sum of its proper divisors (51219273).

140533431 is a wasteful number, since it uses less digits than its factorization.

140533431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 140533431 is about 11854.6797088745. The cubic root of 140533431 is about 519.9080594354.

Adding to 140533431 its reverse (134335041), we get a palindrome (274868472).

The spelling of 140533431 in words is "one hundred forty million, five hundred thirty-three thousand, four hundred thirty-one".