140342631 has 64 divisors (see below), whose sum is σ = 230307840. Its totient is φ = 74880000.

The previous prime is 140342621. The next prime is 140342659. The reversal of 140342631 is 136243041.

It is not a de Polignac number, because 140342631 - 2⁶ = 140342567 is a prime.

It is a super-2 number, since 2×140342631² = 39392108152004322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140342621) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1389481 + ... + 1389581.

It is an arithmetic number, because the mean of its divisors is an integer number (3598560).

Almost surely, 2^140342631 is an apocalyptic number.

140342631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

140342631 is a deficient number, since it is larger than the sum of its proper divisors (89965209).

140342631 is a wasteful number, since it uses less digits than its factorization.

140342631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248.

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

The square root of 140342631 is about 11846.6295206696. The cubic root of 140342631 is about 519.6726625757.

Adding to 140342631 its reverse (136243041), we get a palindrome (276585672).

The spelling of 140342631 in words is "one hundred forty million, three hundred forty-two thousand, six hundred thirty-one".