1310203020 has 96 divisors (see below), whose sum is σ = 4281919488. Its totient is φ = 293098752.

The previous prime is 1310203001. The next prime is 1310203031. The reversal of 1310203020 is 203020131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1310202987 and 1310203005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13447 + ... + 52926.

It is an arithmetic number, because the mean of its divisors is an integer number (44603328).

Almost surely, 2^1310203020 is an apocalyptic number.

1310203020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310203020 is an abundant number, since it is smaller than the sum of its proper divisors (2971716468).

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

1310203020 is a wasteful number, since it uses less digits than its factorization.

1310203020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66439 (or 66437 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1310203020 is about 36196.7266475851. The cubic root of 1310203020 is about 1094.2407029406.

Adding to 1310203020 its reverse (203020131), we get a palindrome (1513223151).

The spelling of 1310203020 in words is "one billion, three hundred ten million, two hundred three thousand, twenty".