1220051031 has 8 divisors (see below), whose sum is σ = 1697462400. Its totient is φ = 778003512.

The previous prime is 1220051023. The next prime is 1220051033. The reversal of 1220051031 is 1301500221.

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

It is not a de Polignac number, because 1220051031 - 2³ = 1220051023 is a prime.

It is a super-2 number, since 2×1220051031² = 2977049036488325922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220051031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220051033) 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, 8840881 + ... + 8841018.

It is an arithmetic number, because the mean of its divisors is an integer number (212182800).

Almost surely, 2^1220051031 is an apocalyptic number.

1220051031 is a deficient number, since it is larger than the sum of its proper divisors (477411369).

1220051031 is a wasteful number, since it uses less digits than its factorization.

1220051031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17681925.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1220051031 is about 34929.2288921470. The cubic root of 1220051031 is about 1068.5446283402.

Adding to 1220051031 its reverse (1301500221), we get a palindrome (2521551252).

The spelling of 1220051031 in words is "one billion, two hundred twenty million, fifty-one thousand, thirty-one".