1020231213 has 8 divisors (see below), whose sum is σ = 1360598400. Its totient is φ = 680009088.

The previous prime is 1020231203. The next prime is 1020231221. The reversal of 1020231213 is 3121320201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020231213 - 2⁸ = 1020230957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1020231192 and 1020231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020231203) 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, 18628 + ... + 48861.

It is an arithmetic number, because the mean of its divisors is an integer number (170074800).

Almost surely, 2^1020231213 is an apocalyptic number.

It is an amenable number.

1020231213 is a deficient number, since it is larger than the sum of its proper divisors (340367187).

1020231213 is an equidigital number, since it uses as much as digits as its factorization.

1020231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72531.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1020231213 is about 31941.0584201588. The cubic root of 1020231213 is about 1006.6987640283.

Adding to 1020231213 its reverse (3121320201), we get a palindrome (4141551414).

The spelling of 1020231213 in words is "one billion, twenty million, two hundred thirty-one thousand, two hundred thirteen".