140542251431 has 8 divisors (see below), whose sum is σ = 144652442928. Its totient is φ = 136464552000.

The previous prime is 140542251407. The next prime is 140542251491. The reversal of 140542251431 is 134152245041.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140542251431 is a prime.

It is a super-2 number, since 2×140542251431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140542251401) 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, 8114240 + ... + 8131541.

It is an arithmetic number, because the mean of its divisors is an integer number (18081555366).

Almost surely, 2^140542251431 is an apocalyptic number.

140542251431 is a deficient number, since it is larger than the sum of its proper divisors (4110191497).

140542251431 is a wasteful number, since it uses less digits than its factorization.

140542251431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16246033.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 140542251431 its reverse (134152245041), we get a palindrome (274694496472).

The spelling of 140542251431 in words is "one hundred forty billion, five hundred forty-two million, two hundred fifty-one thousand, four hundred thirty-one".