1020253131203 has 4 divisors (see below), whose sum is σ = 1027009774608. Its totient is φ = 1013496487800.

The previous prime is 1020253131197. The next prime is 1020253131269. The reversal of 1020253131203 is 3021313520201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020253131203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020253133203) 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, 3378321476 + ... + 3378321777.

It is an arithmetic number, because the mean of its divisors is an integer number (256752443652).

Almost surely, 2^{1020253131203} is an apocalyptic number.

1020253131203 is a deficient number, since it is larger than the sum of its proper divisors (6756643405).

1020253131203 is an equidigital number, since it uses as much as digits as its factorization.

1020253131203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6756643404.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 1020253131203 its reverse (3021313520201), we get a palindrome (4041566651404).

The spelling of 1020253131203 in words is "one trillion, twenty billion, two hundred fifty-three million, one hundred thirty-one thousand, two hundred three".