1423131000 has 128 divisors (see below), whose sum is σ = 4560528960. Its totient is φ = 369216000.

The previous prime is 1423130993. The next prime is 1423131019. The reversal of 1423131000 is 1313241.

It is a super-2 number, since 2×1423131000² = 4050603686322000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104590 + ... + 117410.

Almost surely, 2^1423131000 is an apocalyptic number.

1423131000 is a gapful number since it is divisible by the number (10) 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 1423131000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2280264480).

1423131000 is an abundant number, since it is smaller than the sum of its proper divisors (3137397960).

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

1423131000 is a wasteful number, since it uses less digits than its factorization.

1423131000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12882 (or 12868 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1423131000 is about 37724.4085440713. The cubic root of 1423131000 is about 1124.8163650884.

Adding to 1423131000 its reverse (1313241), we get a palindrome (1424444241).

The spelling of 1423131000 in words is "one billion, four hundred twenty-three million, one hundred thirty-one thousand".