1020071213 has 16 divisors (see below), whose sum is σ = 1274194944. Its totient is φ = 796366080.

The previous prime is 1020071209. The next prime is 1020071249. The reversal of 1020071213 is 3121700201.

It is a cyclic number.

It is not a de Polignac number, because 1020071213 - 2² = 1020071209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020071191 and 1020071200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020071263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134570 + ... + 141947.

It is an arithmetic number, because the mean of its divisors is an integer number (79637184).

Almost surely, 2^1020071213 is an apocalyptic number.

It is an amenable number.

1020071213 is a deficient number, since it is larger than the sum of its proper divisors (254123731).

1020071213 is a wasteful number, since it uses less digits than its factorization.

1020071213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276572.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1020071213 is about 31938.5537086450. The cubic root of 1020071213 is about 1006.6461353623.

Adding to 1020071213 its reverse (3121700201), we get a palindrome (4141771414).

The spelling of 1020071213 in words is "one billion, twenty million, seventy-one thousand, two hundred thirteen".