1023212351 has 4 divisors (see below), whose sum is σ = 1169385552. Its totient is φ = 877039152.

The previous prime is 1023212327. The next prime is 1023212363. The reversal of 1023212351 is 1532123201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023212351 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 (1023212251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73086590 + ... + 73086603.

It is an arithmetic number, because the mean of its divisors is an integer number (292346388).

Almost surely, 2^1023212351 is an apocalyptic number.

1023212351 is a deficient number, since it is larger than the sum of its proper divisors (146173201).

1023212351 is an equidigital number, since it uses as much as digits as its factorization.

1023212351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146173200.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1023212351 is about 31987.6906168607. The cubic root of 1023212351 is about 1007.6783424927.

Adding to 1023212351 its reverse (1532123201), we get a palindrome (2555335552).

The spelling of 1023212351 in words is "one billion, twenty-three million, two hundred twelve thousand, three hundred fifty-one".