140388331 has 8 divisors (see below), whose sum is σ = 141528800. Its totient is φ = 139252608.

The previous prime is 140388319. The next prime is 140388341. The reversal of 140388331 is 133883041.

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

It is a cyclic number.

It is not a de Polignac number, because 140388331 - 2⁵ = 140388299 is a prime.

It is a super-2 number, since 2×140388331² = 39417766961931122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140388293 and 140388302.

It is not an unprimeable number, because it can be changed into a prime (140388341) 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, 78115 + ... + 79891.

It is an arithmetic number, because the mean of its divisors is an integer number (17691100).

Almost surely, 2^140388331 is an apocalyptic number.

140388331 is a deficient number, since it is larger than the sum of its proper divisors (1140469).

140388331 is a wasteful number, since it uses less digits than its factorization.

140388331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 140388331 is about 11848.5581823275. The cubic root of 140388331 is about 519.7290637399.

The spelling of 140388331 in words is "one hundred forty million, three hundred eighty-eight thousand, three hundred thirty-one".