1220734131 has 16 divisors (see below), whose sum is σ = 1727205120. Its totient is φ = 765242720.

The previous prime is 1220734129. The next prime is 1220734153. The reversal of 1220734131 is 1314370221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1220734131 - 2¹ = 1220734129 is a prime.

It is a super-2 number, since 2×1220734131² = 2980383637176650322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220734331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145860 + ... + 154001.

It is an arithmetic number, because the mean of its divisors is an integer number (107950320).

Almost surely, 2^1220734131 is an apocalyptic number.

1220734131 is a deficient number, since it is larger than the sum of its proper divisors (506470989).

1220734131 is a wasteful number, since it uses less digits than its factorization.

1220734131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299946.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1220734131 is about 34939.0058673684. The cubic root of 1220734131 is about 1068.7440152601.

The spelling of 1220734131 in words is "one billion, two hundred twenty million, seven hundred thirty-four thousand, one hundred thirty-one".