140232031 has 8 divisors (see below), whose sum is σ = 150361920. Its totient is φ = 130311168.

The previous prime is 140232019. The next prime is 140232061. The reversal of 140232031 is 130232041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140232031 - 2⁵ = 140231999 is a prime.

It is a super-2 number, since 2×140232031² = 39330045036769922, 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 = 140231996 and 140232014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140232061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50866 + ... + 53551.

It is an arithmetic number, because the mean of its divisors is an integer number (18795240).

Almost surely, 2^140232031 is an apocalyptic number.

140232031 is a deficient number, since it is larger than the sum of its proper divisors (10129889).

140232031 is a wasteful number, since it uses less digits than its factorization.

140232031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104513.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 140232031 is about 11841.9606062510. The cubic root of 140232031 is about 519.5361136620.

Adding to 140232031 its reverse (130232041), we get a palindrome (270464072).

It can be divided in two parts, 1402 and 32031, that added together give a palindrome (33433).

The spelling of 140232031 in words is "one hundred forty million, two hundred thirty-two thousand, thirty-one".