140223431431420 has 24 divisors (see below), whose sum is σ = 294469473879504. Its totient is φ = 56089321549056.

The previous prime is 140223431431393. The next prime is 140223431431429. The reversal of 140223431431420 is 24134134322041.

It is a super-2 number, since 2×140223431431420² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140223431431429) 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, 25752787 + ... + 30718933.

It is an arithmetic number, because the mean of its divisors is an integer number (12269561411646).

Almost surely, 2^{140223431431420} is an apocalyptic number.

140223431431420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140223431431420 is an abundant number, since it is smaller than the sum of its proper divisors (154246042448084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140223431431420 is a wasteful number, since it uses less digits than its factorization.

140223431431420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6377949 (or 6377947 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 140223431431420 its reverse (24134134322041), we get a palindrome (164357565753461).

The spelling of 140223431431420 in words is "one hundred forty trillion, two hundred twenty-three billion, four hundred thirty-one million, four hundred thirty-one thousand, four hundred twenty".