121031000 has 64 divisors (see below), whose sum is σ = 285742080. Its totient is φ = 47980800.

The previous prime is 121030993. The next prime is 121031021. The reversal of 121031000 is 130121.

It is a super-2 number, since 2×121031000² = 29297005922000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126524 + ... + 127476.

It is an arithmetic number, because the mean of its divisors is an integer number (4464720).

Almost surely, 2^121031000 is an apocalyptic number.

121031000 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 121031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142871040).

121031000 is an abundant number, since it is smaller than the sum of its proper divisors (164711080).

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

121031000 is a wasteful number, since it uses less digits than its factorization.

121031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101 (or 1087 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 121031000 is about 11001.4090006690. The cubic root of 121031000 is about 494.6509800324.

Adding to 121031000 its reverse (130121), we get a palindrome (121161121).

The spelling of 121031000 in words is "one hundred twenty-one million, thirty-one thousand".