1061531130 has 64 divisors (see below), whose sum is σ = 2798064000. Its totient is φ = 255601920.

The previous prime is 1061531129. The next prime is 1061531131. The reversal of 1061531130 is 311351601.

It is an interprime number because it is at equal distance from previous prime (1061531129) and next prime (1061531131).

It is a super-2 number, since 2×1061531130² = 2253696679918153800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1061531097 and 1061531106.

It is not an unprimeable number, because it can be changed into a prime (1061531131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38376 + ... + 59964.

It is an arithmetic number, because the mean of its divisors is an integer number (43719750).

Almost surely, 2^1061531130 is an apocalyptic number.

1061531130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1061531130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399032000).

1061531130 is an abundant number, since it is smaller than the sum of its proper divisors (1736532870).

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

1061531130 is a wasteful number, since it uses less digits than its factorization.

1061531130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21759.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 1061531130 is about 32581.1468490598. The cubic root of 1061531130 is about 1020.1035169834.

Adding to 1061531130 its reverse (311351601), we get a palindrome (1372882731).

The spelling of 1061531130 in words is "one billion, sixty-one million, five hundred thirty-one thousand, one hundred thirty".