31197070 has 8 divisors (see below), whose sum is σ = 56154744. Its totient is φ = 12478824.

The previous prime is 31197007. The next prime is 31197077. The reversal of 31197070 is 7079113.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31197077) 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 3 ways as a sum of consecutive naturals, for example, 1559844 + ... + 1559863.

It is an arithmetic number, because the mean of its divisors is an integer number (7019343).

Almost surely, 2^31197070 is an apocalyptic number.

31197070 is a deficient number, since it is larger than the sum of its proper divisors (24957674).

31197070 is a wasteful number, since it uses less digits than its factorization.

31197070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119714.

The product of its (nonzero) digits is 1323, while the sum is 28.

The square root of 31197070 is about 5585.4337342770. The cubic root of 31197070 is about 314.8023283202.

The spelling of 31197070 in words is "thirty-one million, one hundred ninety-seven thousand, seventy".