140431269 has 48 divisors (see below), whose sum is σ = 214502400. Its totient is φ = 81612960.

The previous prime is 140431267. The next prime is 140431279. The reversal of 140431269 is 962134041.

It is not a de Polignac number, because 140431269 - 2¹ = 140431267 is a prime.

It is a super-2 number, since 2×140431269² = 39441882625900722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140431267) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1691902 + ... + 1691984.

It is an arithmetic number, because the mean of its divisors is an integer number (4468800).

Almost surely, 2^140431269 is an apocalyptic number.

It is an amenable number.

140431269 is a deficient number, since it is larger than the sum of its proper divisors (74071131).

140431269 is a wasteful number, since it uses less digits than its factorization.

140431269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 140431269 is about 11850.3699942238. The cubic root of 140431269 is about 519.7820449994.

The spelling of 140431269 in words is "one hundred forty million, four hundred thirty-one thousand, two hundred sixty-nine".