1252031069 has 4 divisors (see below), whose sum is σ = 1292419200. Its totient is φ = 1211642940.

The previous prime is 1252031021. The next prime is 1252031071. The reversal of 1252031069 is 9601302521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9601302521 = 51593 ⋅186097.

It is a cyclic number.

It is not a de Polignac number, because 1252031069 - 2¹² = 1252026973 is a prime.

It is a super-2 number, since 2×1252031069² = 3135163595482565522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252031969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20194019 + ... + 20194080.

It is an arithmetic number, because the mean of its divisors is an integer number (323104800).

Almost surely, 2^1252031069 is an apocalyptic number.

It is an amenable number.

1252031069 is a deficient number, since it is larger than the sum of its proper divisors (40388131).

1252031069 is an equidigital number, since it uses as much as digits as its factorization.

1252031069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40388130.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1252031069 is about 35384.0510541119. The cubic root of 1252031069 is about 1077.8004700335.

The spelling of 1252031069 in words is "one billion, two hundred fifty-two million, thirty-one thousand, sixty-nine".