31723068258 has 96 divisors (see below), whose sum is σ = 81534695424. Its totient is φ = 9055614672.

The previous prime is 31723068227. The next prime is 31723068259. The reversal of 31723068258 is 85286032713.

31723068258 is a `hidden beast` number, since 317 + 2 + 306 + 8 + 25 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (31723068259) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4510941 + ... + 4517967.

It is an arithmetic number, because the mean of its divisors is an integer number (849319744).

Almost surely, 2^31723068258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31723068258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40767347712).

31723068258 is an abundant number, since it is smaller than the sum of its proper divisors (49811627166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31723068258 is a wasteful number, since it uses less digits than its factorization.

31723068258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8378 (or 8366 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 31723068258 in words is "thirty-one billion, seven hundred twenty-three million, sixty-eight thousand, two hundred fifty-eight".