140431433 has 4 divisors (see below), whose sum is σ = 140644548. Its totient is φ = 140218320.

The previous prime is 140431429. The next prime is 140431453. The reversal of 140431433 is 334134041.

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

It can be written as a sum of positive squares in 2 ways, for example, as 97555129 + 42876304 = 9877^2 + 6548^2 .

It is a cyclic number.

It is not a de Polignac number, because 140431433 - 2² = 140431429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140431399 and 140431408.

It is not an unprimeable number, because it can be changed into a prime (140431453) 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, 105566 + ... + 106887.

It is an arithmetic number, because the mean of its divisors is an integer number (35161137).

Almost surely, 2^140431433 is an apocalyptic number.

It is an amenable number.

140431433 is a deficient number, since it is larger than the sum of its proper divisors (213115).

140431433 is an equidigital number, since it uses as much as digits as its factorization.

140431433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213114.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 140431433 is about 11850.3769138370. The cubic root of 140431433 is about 519.7822473385.

Adding to 140431433 its reverse (334134041), we get a palindrome (474565474).

The spelling of 140431433 in words is "one hundred forty million, four hundred thirty-one thousand, four hundred thirty-three".