140465631 has 16 divisors (see below), whose sum is σ = 194181120. Its totient is φ = 90252480.

The previous prime is 140465629. The next prime is 140465639. The reversal of 140465631 is 136564041.

It is not a de Polignac number, because 140465631 - 2¹ = 140465629 is a prime.

It is a super-2 number, since 2×140465631² = 39461186984456322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140465639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3330 + ... + 17088.

It is an arithmetic number, because the mean of its divisors is an integer number (12136320).

Almost surely, 2^140465631 is an apocalyptic number.

140465631 is a deficient number, since it is larger than the sum of its proper divisors (53715489).

140465631 is a wasteful number, since it uses less digits than its factorization.

140465631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13886.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 140465631 is about 11851.8197336949. The cubic root of 140465631 is about 519.8244365413.

The spelling of 140465631 in words is "one hundred forty million, four hundred sixty-five thousand, six hundred thirty-one".