97151331 has 4 divisors (see below), whose sum is σ = 129535112. Its totient is φ = 64767552.

The previous prime is 97151321. The next prime is 97151357. The reversal of 97151331 is 13315179.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 97151331 - 2⁶ = 97151267 is a prime.

It is a super-2 number, since 2×97151331² = 18876762230143122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97151321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16191886 + ... + 16191891.

It is an arithmetic number, because the mean of its divisors is an integer number (32383778).

Almost surely, 2^97151331 is an apocalyptic number.

97151331 is a deficient number, since it is larger than the sum of its proper divisors (32383781).

97151331 is a wasteful number, since it uses less digits than its factorization.

97151331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32383780.

The product of its digits is 2835, while the sum is 30.

The square root of 97151331 is about 9856.5374751989. The cubic root of 97151331 is about 459.7089068842.

The spelling of 97151331 in words is "ninety-seven million, one hundred fifty-one thousand, three hundred thirty-one".