1321012023 has 8 divisors (see below), whose sum is σ = 1761531648. Its totient is φ = 880583544.

The previous prime is 1321012019. The next prime is 1321012037. The reversal of 1321012023 is 3202101231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321012023 - 2² = 1321012019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321011993 and 1321012011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321012123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25890 + ... + 57552.

It is an arithmetic number, because the mean of its divisors is an integer number (220191456).

Almost surely, 2^1321012023 is an apocalyptic number.

1321012023 is a deficient number, since it is larger than the sum of its proper divisors (440519625).

1321012023 is a wasteful number, since it uses less digits than its factorization.

1321012023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45573.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1321012023 is about 36345.7290888489. The cubic root of 1321012023 is about 1097.2415798011.

Adding to 1321012023 its reverse (3202101231), we get a palindrome (4523113254).

The spelling of 1321012023 in words is "one billion, three hundred twenty-one million, twelve thousand, twenty-three".