1211032957 has 4 divisors (see below), whose sum is σ = 1211963680. Its totient is φ = 1210102236.

The previous prime is 1211032919. The next prime is 1211032981. The reversal of 1211032957 is 7592301121.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211032957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211032157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463407 + ... + 466012.

It is an arithmetic number, because the mean of its divisors is an integer number (302990920).

Almost surely, 2^1211032957 is an apocalyptic number.

It is an amenable number.

1211032957 is a deficient number, since it is larger than the sum of its proper divisors (930723).

1211032957 is an equidigital number, since it uses as much as digits as its factorization.

1211032957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930722.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 1211032957 is about 34799.8988073241. The cubic root of 1211032957 is about 1065.9053795257.

The spelling of 1211032957 in words is "one billion, two hundred eleven million, thirty-two thousand, nine hundred fifty-seven".