140147631 has 16 divisors (see below), whose sum is σ = 223597920. Its totient is φ = 86244480.

The previous prime is 140147627. The next prime is 140147641. The reversal of 140147631 is 136741041.

It is a happy number.

140147631 is a `hidden beast` number, since 14 + 0 + 14 + 7 + 631 = 666.

It is not a de Polignac number, because 140147631 - 2² = 140147627 is a prime.

It is a super-2 number, since 2×140147631² = 39282716949824322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 140147595 and 140147604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140147611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199290 + ... + 199991.

It is an arithmetic number, because the mean of its divisors is an integer number (13974870).

Almost surely, 2^140147631 is an apocalyptic number.

140147631 is a deficient number, since it is larger than the sum of its proper divisors (83450289).

140147631 is a wasteful number, since it uses less digits than its factorization.

140147631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399303 (or 399297 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 140147631 is about 11838.3964708063. The cubic root of 140147631 is about 519.4318634714.

Adding to 140147631 its reverse (136741041), we get a palindrome (276888672).

The spelling of 140147631 in words is "one hundred forty million, one hundred forty-seven thousand, six hundred thirty-one".