1220162631 has 8 divisors (see below), whose sum is σ = 1629124224. Its totient is φ = 812321400.

The previous prime is 1220162591. The next prime is 1220162651. The reversal of 1220162631 is 1362610221.

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

It is not a de Polignac number, because 1220162631 - 2¹⁴ = 1220146247 is a prime.

It is a super-2 number, since 2×1220162631² = 2977593692177684322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220162651) 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, 277545 + ... + 281906.

It is an arithmetic number, because the mean of its divisors is an integer number (203640528).

Almost surely, 2^1220162631 is an apocalyptic number.

1220162631 is a deficient number, since it is larger than the sum of its proper divisors (408961593).

1220162631 is an equidigital number, since it uses as much as digits as its factorization.

1220162631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560181.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1220162631 is about 34930.8263715590. The cubic root of 1220162631 is about 1068.5772078367.

Adding to 1220162631 its reverse (1362610221), we get a palindrome (2582772852).

The spelling of 1220162631 in words is "one billion, two hundred twenty million, one hundred sixty-two thousand, six hundred thirty-one".