140662631 has 4 divisors (see below), whose sum is σ = 142243200. Its totient is φ = 139082064.

The previous prime is 140662619. The next prime is 140662637. The reversal of 140662631 is 136266041.

It is a happy number.

140662631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140662631 - 2¹⁰ = 140661607 is a prime.

It is a super-2 number, since 2×140662631² = 39571951519684322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140662594 and 140662603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140662637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790151 + ... + 790328.

It is an arithmetic number, because the mean of its divisors is an integer number (35560800).

Almost surely, 2^140662631 is an apocalyptic number.

140662631 is a deficient number, since it is larger than the sum of its proper divisors (1580569).

140662631 is an equidigital number, since it uses as much as digits as its factorization.

140662631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580568.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 140662631 is about 11860.1277817737. The cubic root of 140662631 is about 520.0673371871.

The spelling of 140662631 in words is "one hundred forty million, six hundred sixty-two thousand, six hundred thirty-one".