140312131 has 8 divisors (see below), whose sum is σ = 147916800. Its totient is φ = 132729480.

The previous prime is 140312119. The next prime is 140312141. The reversal of 140312131 is 131213041.

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 140312131 - 2⁵ = 140312099 is a prime.

It is a super-2 number, since 2×140312131² = 39374988211522322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140312111) 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, 8526 + ... + 18796.

It is an arithmetic number, because the mean of its divisors is an integer number (18489600).

Almost surely, 2^140312131 is an apocalyptic number.

140312131 is a deficient number, since it is larger than the sum of its proper divisors (7604669).

140312131 is a wasteful number, since it uses less digits than its factorization.

140312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11009.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 140312131 is about 11845.3421647498. The cubic root of 140312131 is about 519.6350138479.

Adding to 140312131 its reverse (131213041), we get a palindrome (271525172).

The spelling of 140312131 in words is "one hundred forty million, three hundred twelve thousand, one hundred thirty-one".