531031950 has 240 divisors, whose sum is σ = 1591624320. Its totient is φ = 130870080.

The previous prime is 531031937. The next prime is 531031951. The reversal of 531031950 is 59130135.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531031951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 5155599 + ... + 5155701.

It is an arithmetic number, because the mean of its divisors is an integer number (6631768).

Almost surely, 2^531031950 is an apocalyptic number.

531031950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 531031950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (795812160).

531031950 is an abundant number, since it is smaller than the sum of its proper divisors (1060592370).

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

531031950 is a wasteful number, since it uses less digits than its factorization.

531031950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 27.

The square root of 531031950 is about 23044.1304891289. The cubic root of 531031950 is about 809.7921277278.

The spelling of 531031950 in words is "five hundred thirty-one million, thirty-one thousand, nine hundred fifty".