1020131211 has 8 divisors (see below), whose sum is σ = 1483827264. Its totient is φ = 618261320.

The previous prime is 1020131051. The next prime is 1020131251. The reversal of 1020131211 is 1121310201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020131211 - 2¹³ = 1020123019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020131251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15456501 + ... + 15456566.

It is an arithmetic number, because the mean of its divisors is an integer number (185478408).

Almost surely, 2^1020131211 is an apocalyptic number.

1020131211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1020131211 is a deficient number, since it is larger than the sum of its proper divisors (463696053).

1020131211 is a wasteful number, since it uses less digits than its factorization.

1020131211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30913081.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1020131211 is about 31939.4929671715. The cubic root of 1020131211 is about 1006.6658710991.

Adding to 1020131211 its reverse (1121310201), we get a palindrome (2141441412).

It can be divided in two parts, 1020 and 131211, that added together give a palindrome (132231).

The spelling of 1020131211 in words is "one billion, twenty million, one hundred thirty-one thousand, two hundred eleven".