1201252531 has 2 divisors, whose sum is σ = 1201252532. Its totient is φ = 1201252530.

The previous prime is 1201252499. The next prime is 1201252537. The reversal of 1201252531 is 1352521021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201252531 - 2⁵ = 1201252499 is a prime.

It is a super-2 number, since 2×1201252531² = 2886015286467811922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1201252537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600626265 + 600626266.

It is an arithmetic number, because the mean of its divisors is an integer number (600626266).

Almost surely, 2^1201252531 is an apocalyptic number.

1201252531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201252531 is an equidigital number, since it uses as much as digits as its factorization.

1201252531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1201252531 is about 34659.0901640536. The cubic root of 1201252531 is about 1063.0281663981.

Adding to 1201252531 its reverse (1352521021), we get a palindrome (2553773552).

The spelling of 1201252531 in words is "one billion, two hundred one million, two hundred fifty-two thousand, five hundred thirty-one".