140631403 has 6 divisors (see below), whose sum is σ = 154578452. Its totient is φ = 127846620.

The previous prime is 140631383. The next prime is 140631409. The reversal of 140631403 is 304136041.

It is not a de Polignac number, because 140631403 - 2²⁵ = 107076971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140631409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 581001 + ... + 581242.

Almost surely, 2^140631403 is an apocalyptic number.

140631403 is a deficient number, since it is larger than the sum of its proper divisors (13947049).

140631403 is a wasteful number, since it uses less digits than its factorization.

140631403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162265 (or 1162254 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 140631403 is about 11858.8111967431. The cubic root of 140631403 is about 520.0288482516.

Adding to 140631403 its reverse (304136041), we get a palindrome (444767444).

The spelling of 140631403 in words is "one hundred forty million, six hundred thirty-one thousand, four hundred three".