870157831 has 8 divisors (see below), whose sum is σ = 874298880. Its totient is φ = 866027448.

The previous prime is 870157787. The next prime is 870157853. The reversal of 870157831 is 138751078.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 870157831 - 2¹⁹ = 869633543 is a prime.

It is a super-2 number, since 2×870157831² = 1514349301701249122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870158831) 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, 193450 + ... + 197896.

It is an arithmetic number, because the mean of its divisors is an integer number (109287360).

Almost surely, 2^870157831 is an apocalyptic number.

870157831 is a deficient number, since it is larger than the sum of its proper divisors (4141049).

870157831 is a wasteful number, since it uses less digits than its factorization.

870157831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333.

The product of its (nonzero) digits is 47040, while the sum is 40.

The square root of 870157831 is about 29498.4377721940. The cubic root of 870157831 is about 954.6979961154.

The spelling of 870157831 in words is "eight hundred seventy million, one hundred fifty-seven thousand, eight hundred thirty-one".