1011020136 has 96 divisors (see below), whose sum is σ = 2970858240. Its totient is φ = 285852672.

The previous prime is 1011020123. The next prime is 1011020137. The reversal of 1011020136 is 6310201101.

It is not an unprimeable number, because it can be changed into a prime (1011020137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109641 + ... + 118503.

It is an arithmetic number, because the mean of its divisors is an integer number (30946440).

Almost surely, 2^1011020136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011020136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1485429120).

1011020136 is an abundant number, since it is smaller than the sum of its proper divisors (1959838104).

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

1011020136 is a wasteful number, since it uses less digits than its factorization.

1011020136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8983 (or 8972 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1011020136 is about 31796.5428309431. The cubic root of 1011020136 is about 1003.6599669663.

Adding to 1011020136 its reverse (6310201101), we get a palindrome (7321221237).

The spelling of 1011020136 in words is "one billion, eleven million, twenty thousand, one hundred thirty-six".