1321970053 has 2 divisors, whose sum is σ = 1321970054. Its totient is φ = 1321970052.

The previous prime is 1321969993. The next prime is 1321970141. The reversal of 1321970053 is 3500791231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1167042244 + 154927809 = 34162^2 + 12447^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321970053 - 2⁹ = 1321969541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321969997 and 1321970024.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321974053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660985026 + 660985027.

It is an arithmetic number, because the mean of its divisors is an integer number (660985027).

Almost surely, 2^1321970053 is an apocalyptic number.

It is an amenable number.

1321970053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321970053 is an equidigital number, since it uses as much as digits as its factorization.

1321970053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 1321970053 is about 36358.9061029069. The cubic root of 1321970053 is about 1097.5067644521.

The spelling of 1321970053 in words is "one billion, three hundred twenty-one million, nine hundred seventy thousand, fifty-three".