1213275346 has 32 divisors (see below), whose sum is σ = 2014823808. Its totient is φ = 545022720.

The previous prime is 1213275337. The next prime is 1213275439. The reversal of 1213275346 is 6435723121.

It is a super-2 number, since 2×1213275346² = 2944074130422839432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478101 + ... + 480631.

It is an arithmetic number, because the mean of its divisors is an integer number (62963244).

Almost surely, 2^1213275346 is an apocalyptic number.

1213275346 is a deficient number, since it is larger than the sum of its proper divisors (801548462).

1213275346 is a wasteful number, since it uses less digits than its factorization.

1213275346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186.

The product of its digits is 30240, while the sum is 34.

The square root of 1213275346 is about 34832.1022334283. The cubic root of 1213275346 is about 1066.5628625330.

Adding to 1213275346 its reverse (6435723121), we get a palindrome (7648998467).

It can be divided in two parts, 12132 and 75346, that added together give a palindrome (87478).

The spelling of 1213275346 in words is "one billion, two hundred thirteen million, two hundred seventy-five thousand, three hundred forty-six".