1020131400423 has 4 divisors (see below), whose sum is σ = 1360175200568. Its totient is φ = 680087600280.

The previous prime is 1020131400419. The next prime is 1020131400443. The reversal of 1020131400423 is 3240041310201.

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

It is not a de Polignac number, because 1020131400423 - 2² = 1020131400419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020131400423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020131400413) 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, 170021900068 + ... + 170021900073.

It is an arithmetic number, because the mean of its divisors is an integer number (340043800142).

Almost surely, 2^{1020131400423} is an apocalyptic number.

1020131400423 is a deficient number, since it is larger than the sum of its proper divisors (340043800145).

1020131400423 is an equidigital number, since it uses as much as digits as its factorization.

1020131400423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340043800144.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1020131400423 its reverse (3240041310201), we get a palindrome (4260172710624).

The spelling of 1020131400423 in words is "one trillion, twenty billion, one hundred thirty-one million, four hundred thousand, four hundred twenty-three".