1023356397 has 64 divisors (see below), whose sum is σ = 1704734720. Its totient is φ = 532998144.

The previous prime is 1023356393. The next prime is 1023356447. The reversal of 1023356397 is 7936533201.

It is not a de Polignac number, because 1023356397 - 2² = 1023356393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023356393) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1520253 + ... + 1520925.

It is an arithmetic number, because the mean of its divisors is an integer number (26636480).

Almost surely, 2^1023356397 is an apocalyptic number.

It is an amenable number.

1023356397 is a deficient number, since it is larger than the sum of its proper divisors (681378323).

1023356397 is a wasteful number, since it uses less digits than its factorization.

1023356397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842.

The product of its (nonzero) digits is 102060, while the sum is 39.

The square root of 1023356397 is about 31989.9421224859. The cubic root of 1023356397 is about 1007.7256266573.

Adding to 1023356397 its reverse (7936533201), we get a palindrome (8959889598).

The spelling of 1023356397 in words is "one billion, twenty-three million, three hundred fifty-six thousand, three hundred ninety-seven".