140231401 has 4 divisors (see below), whose sum is σ = 141240400. Its totient is φ = 139222404.

The previous prime is 140231387. The next prime is 140231407. The reversal of 140231401 is 104132041.

140231401 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104132041 = 13 ⋅8010157.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140231401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140231407) 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, 504291 + ... + 504568.

It is an arithmetic number, because the mean of its divisors is an integer number (35310100).

Almost surely, 2^140231401 is an apocalyptic number.

It is an amenable number.

140231401 is a deficient number, since it is larger than the sum of its proper divisors (1008999).

140231401 is a wasteful number, since it uses less digits than its factorization.

140231401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008998.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 140231401 is about 11841.9340058962. The cubic root of 140231401 is about 519.5353356461.

Adding to 140231401 its reverse (104132041), we get a palindrome (244363442).

The spelling of 140231401 in words is "one hundred forty million, two hundred thirty-one thousand, four hundred one".