31141950 has 144 divisors (see below), whose sum is σ = 94993920. Its totient is φ = 6713280.

The previous prime is 31141937. The next prime is 31141951. The reversal of 31141950 is 5914113.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31141950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31141951) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 139539 + ... + 139761.

It is an arithmetic number, because the mean of its divisors is an integer number (659680).

Almost surely, 2^31141950 is an apocalyptic number.

31141950 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31141950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47496960).

31141950 is an abundant number, since it is smaller than the sum of its proper divisors (63851970).

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

31141950 is a wasteful number, since it uses less digits than its factorization.

31141950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 31141950 is about 5580.4972896687. The cubic root of 31141950 is about 314.6168180176.

The spelling of 31141950 in words is "thirty-one million, one hundred forty-one thousand, nine hundred fifty".