23010031620 has 144 divisors (see below), whose sum is σ = 71214120432. Its totient is φ = 6011765760.

The previous prime is 23010031589. The next prime is 23010031621. The reversal of 23010031620 is 2613001032.

23010031620 is a `hidden beast` number, since 2 + 3 + 0 + 10 + 0 + 31 + 620 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 9668395584 + 13341636036 = 98328^2 + 115506^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23010031593 and 23010031602.

It is not an unprimeable number, because it can be changed into a prime (23010031621) 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 47 ways as a sum of consecutive naturals, for example, 9662830 + ... + 9665210.

It is an arithmetic number, because the mean of its divisors is an integer number (494542503).

Almost surely, 2^23010031620 is an apocalyptic number.

23010031620 is a gapful number since it is divisible by the number (20) 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 23010031620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35607060216).

23010031620 is an abundant number, since it is smaller than the sum of its proper divisors (48204088812).

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

23010031620 is a wasteful number, since it uses less digits than its factorization.

23010031620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3462 (or 3457 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23010031620 its reverse (2613001032), we get a palindrome (25623032652).

The spelling of 23010031620 in words is "twenty-three billion, ten million, thirty-one thousand, six hundred twenty".