1001023497 has 6 divisors (see below), whose sum is σ = 1445922842. Its totient is φ = 667348992.

The previous prime is 1001023489. The next prime is 1001023501. The reversal of 1001023497 is 7943201001.

It can be written as a sum of positive squares in only one way, i.e., 920454921 + 80568576 = 30339^2 + 8976^2 .

It is not a de Polignac number, because 1001023497 - 2³ = 1001023489 is a prime.

It is a super-2 number, since 2×1001023497² = 2004096083092218018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001023497.

It is not an unprimeable number, because it can be changed into a prime (1001023447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55612408 + ... + 55612425.

Almost surely, 2^1001023497 is an apocalyptic number.

It is an amenable number.

1001023497 is a deficient number, since it is larger than the sum of its proper divisors (444899345).

1001023497 is a wasteful number, since it uses less digits than its factorization.

1001023497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111224839 (or 111224836 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1001023497 is about 31638.9553715037. The cubic root of 1001023497 is about 1000.3410493388.

Adding to 1001023497 its reverse (7943201001), we get a palindrome (8944224498).

The spelling of 1001023497 in words is "one billion, one million, twenty-three thousand, four hundred ninety-seven".