231019489896 has 192 divisors, whose sum is σ = 634723750080. Its totient is φ = 69653928960.

The previous prime is 231019489843. The next prime is 231019489949. The reversal of 231019489896 is 698984910132.

It is an interprime number because it is at equal distance from previous prime (231019489843) and next prime (231019489949).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 393559315 + ... + 393559901.

It is an arithmetic number, because the mean of its divisors is an integer number (3305852865).

Almost surely, 2^231019489896 is an apocalyptic number.

231019489896 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231019489896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317361875040).

231019489896 is an abundant number, since it is smaller than the sum of its proper divisors (403704260184).

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

231019489896 is a wasteful number, since it uses less digits than its factorization.

231019489896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 60.

The spelling of 231019489896 in words is "two hundred thirty-one billion, nineteen million, four hundred eighty-nine thousand, eight hundred ninety-six".