1031239997 has 8 divisors (see below), whose sum is σ = 1056125952. Its totient is φ = 1006642000.

The previous prime is 1031239961. The next prime is 1031240003. The reversal of 1031239997 is 7999321301.

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

It is a cyclic number.

It is not a de Polignac number, because 1031239997 - 2¹⁰ = 1031238973 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 (1031239927) 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, 64733 + ... + 79074.

It is an arithmetic number, because the mean of its divisors is an integer number (132015744).

Almost surely, 2^1031239997 is an apocalyptic number.

It is an amenable number.

1031239997 is a deficient number, since it is larger than the sum of its proper divisors (24885955).

1031239997 is a wasteful number, since it uses less digits than its factorization.

1031239997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143979.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 1031239997 is about 32112.9256997864. The cubic root of 1031239997 is about 1010.3067385168.

The spelling of 1031239997 in words is "one billion, thirty-one million, two hundred thirty-nine thousand, nine hundred ninety-seven".