1031210320203 has 24 divisors (see below), whose sum is σ = 1727723149568. Its totient is φ = 580468066992.

The previous prime is 1031210320171. The next prime is 1031210320219. The reversal of 1031210320203 is 3020230121301.

1031210320203 is a `hidden beast` number, since 1 + 0 + 312 + 10 + 320 + 20 + 3 = 666.

It is not a de Polignac number, because 1031210320203 - 2⁵ = 1031210320171 is a prime.

It is a super-2 number, since 2×1031210320203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031210320703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122148151 + ... + 122156592.

Almost surely, 2^{1031210320203} is an apocalyptic number.

1031210320203 is a deficient number, since it is larger than the sum of its proper divisors (696512829365).

1031210320203 is a wasteful number, since it uses less digits than its factorization.

1031210320203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244304823 (or 244304820 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1031210320203 its reverse (3020230121301), we get a palindrome (4051440441504).

The spelling of 1031210320203 in words is "one trillion, thirty-one billion, two hundred ten million, three hundred twenty thousand, two hundred three".