140407631 has 8 divisors (see below), whose sum is σ = 172809504. Its totient is φ = 111091680.

The previous prime is 140407627. The next prime is 140407633. The reversal of 140407631 is 136704041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140407631 - 2² = 140407627 is a prime.

It is a super-2 number, since 2×140407631² = 39428605686064322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140407631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140407633) 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, 771380 + ... + 771561.

It is an arithmetic number, because the mean of its divisors is an integer number (21601188).

Almost surely, 2^140407631 is an apocalyptic number.

140407631 is a deficient number, since it is larger than the sum of its proper divisors (32401873).

140407631 is a wasteful number, since it uses less digits than its factorization.

140407631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542961.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 140407631 is about 11849.3725994248. The cubic root of 140407631 is about 519.7528793739.

The spelling of 140407631 in words is "one hundred forty million, four hundred seven thousand, six hundred thirty-one".