140432031 has 12 divisors (see below), whose sum is σ = 203144760. Its totient is φ = 93483600.

The previous prime is 140432029. The next prime is 140432051. The reversal of 140432031 is 130234041.

It is not a de Polignac number, because 140432031 - 2¹ = 140432029 is a prime.

It is a super-2 number, since 2×140432031² = 39442310661569922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140431995 and 140432013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140432051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4821 + ... + 17438.

It is an arithmetic number, because the mean of its divisors is an integer number (16928730).

Almost surely, 2^140432031 is an apocalyptic number.

140432031 is a deficient number, since it is larger than the sum of its proper divisors (62712729).

140432031 is a wasteful number, since it uses less digits than its factorization.

140432031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22966 (or 22963 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 140432031 is about 11850.4021450751. The cubic root of 140432031 is about 519.7829851348.

Adding to 140432031 its reverse (130234041), we get a palindrome (270666072).

The spelling of 140432031 in words is "one hundred forty million, four hundred thirty-two thousand, thirty-one".