31197069 has 48 divisors (see below), whose sum is σ = 51105600. Its totient is φ = 18942336.

The previous prime is 31197007. The next prime is 31197077. The reversal of 31197069 is 96079113.

It is not a de Polignac number, because 31197069 - 2¹³ = 31188877 is a prime.

It is a super-2 number, since 2×31197069² = 1946514228381522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31197079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133777 + ... + 134009.

It is an arithmetic number, because the mean of its divisors is an integer number (1064700).

Almost surely, 2^31197069 is an apocalyptic number.

It is an amenable number.

31197069 is a deficient number, since it is larger than the sum of its proper divisors (19908531).

31197069 is a wasteful number, since it uses less digits than its factorization.

31197069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 31197069 is about 5585.4336447585. The cubic root of 31197069 is about 314.8023249566.

The spelling of 31197069 in words is "thirty-one million, one hundred ninety-seven thousand, sixty-nine".