133310997 has 12 divisors (see below), whose sum is σ = 192707424. Its totient is φ = 88806120.

The previous prime is 133310993. The next prime is 133311007. The reversal of 133310997 is 799013331.

It is not a de Polignac number, because 133310997 - 2² = 133310993 is a prime.

It is a super-2 number, since 2×133310997² = 35543643842268018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133310993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8698 + ... + 18500.

It is an arithmetic number, because the mean of its divisors is an integer number (16058952).

Almost surely, 2^133310997 is an apocalyptic number.

It is an amenable number.

133310997 is a deficient number, since it is larger than the sum of its proper divisors (59396427).

133310997 is a wasteful number, since it uses less digits than its factorization.

133310997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11320 (or 11317 counting only the distinct ones).

The product of its (nonzero) digits is 15309, while the sum is 36.

The square root of 133310997 is about 11546.0381516778. The cubic root of 133310997 is about 510.8444257644.

The spelling of 133310997 in words is "one hundred thirty-three million, three hundred ten thousand, nine hundred ninety-seven".