30131010 has 144 divisors (see below), whose sum is σ = 97291584. Its totient is φ = 6334848.

The previous prime is 30130999. The next prime is 30131033. The reversal of 30131010 is 1013103.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30130983 and 30131001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 106329 + ... + 106611.

It is an arithmetic number, because the mean of its divisors is an integer number (675636).

Almost surely, 2^30131010 is an apocalyptic number.

30131010 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 30131010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48645792).

30131010 is an abundant number, since it is smaller than the sum of its proper divisors (67160574).

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

30131010 is a wasteful number, since it uses less digits than its factorization.

30131010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 30131010 is about 5489.1720687186. The cubic root of 30131010 is about 311.1749032547.

Adding to 30131010 its reverse (1013103), we get a palindrome (31144113).

The spelling of 30131010 in words is "thirty million, one hundred thirty-one thousand, ten".