140331404 has 12 divisors (see below), whose sum is σ = 248944584. Its totient is φ = 69204384.

The previous prime is 140331371. The next prime is 140331407. The reversal of 140331404 is 404133041.

It is a happy number.

It is a super-2 number, since 2×140331404² = 39385805897222432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140331407) 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, 240002 + ... + 240585.

It is an arithmetic number, because the mean of its divisors is an integer number (20745382).

Almost surely, 2^140331404 is an apocalyptic number.

It is an amenable number.

140331404 is a deficient number, since it is larger than the sum of its proper divisors (108613180).

140331404 is a wasteful number, since it uses less digits than its factorization.

140331404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480664 (or 480662 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 140331404 is about 11846.1556633365. The cubic root of 140331404 is about 519.6588047751.

Adding to 140331404 its reverse (404133041), we get a palindrome (544464445).

The spelling of 140331404 in words is "one hundred forty million, three hundred thirty-one thousand, four hundred four".