31970155011 has 8 divisors (see below), whose sum is σ = 43618196160. Its totient is φ = 20817775272.

The previous prime is 31970154989. The next prime is 31970155027. The reversal of 31970155011 is 11055107913.

It is a happy number.

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

It is not a de Polignac number, because 31970155011 - 2¹⁵ = 31970122243 is a prime.

It is a super-2 number, since 2×31970155011² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31970155111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123915201 + ... + 123915458.

It is an arithmetic number, because the mean of its divisors is an integer number (5452274520).

Almost surely, 2^31970155011 is an apocalyptic number.

31970155011 is a deficient number, since it is larger than the sum of its proper divisors (11648041149).

31970155011 is a wasteful number, since it uses less digits than its factorization.

31970155011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247830705.

The product of its (nonzero) digits is 4725, while the sum is 33.

The spelling of 31970155011 in words is "thirty-one billion, nine hundred seventy million, one hundred fifty-five thousand, eleven".