1013253421 has 2 divisors, whose sum is σ = 1013253422. Its totient is φ = 1013253420.

The previous prime is 1013253407. The next prime is 1013253443. The reversal of 1013253421 is 1243523101.

It is a happy number.

It is an a-pointer prime, because the next prime (1013253443) can be obtained adding 1013253421 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 985269321 + 27984100 = 31389^2 + 5290^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013253421 - 2⁵ = 1013253389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1013253392 and 1013253401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1013253121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506626710 + 506626711.

It is an arithmetic number, because the mean of its divisors is an integer number (506626711).

Almost surely, 2^1013253421 is an apocalyptic number.

It is an amenable number.

1013253421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013253421 is an equidigital number, since it uses as much as digits as its factorization.

1013253421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1013253421 is about 31831.6418206790. The cubic root of 1013253421 is about 1004.3984324278.

Adding to 1013253421 its reverse (1243523101), we get a palindrome (2256776522).

The spelling of 1013253421 in words is "one billion, thirteen million, two hundred fifty-three thousand, four hundred twenty-one".