1397223135 has 128 divisors (see below), whose sum is σ = 3122380800. Its totient is φ = 575890560.

The previous prime is 1397223109. The next prime is 1397223137. The reversal of 1397223135 is 5313227931.

It is a happy number.

1397223135 is a `hidden beast` number, since 1 + 397 + 2 + 231 + 35 = 666.

It is not a de Polignac number, because 1397223135 - 2¹⁴ = 1397206751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1397223135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397223137) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1444422 + ... + 1445388.

It is an arithmetic number, because the mean of its divisors is an integer number (24393600).

Almost surely, 2^1397223135 is an apocalyptic number.

1397223135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1397223135 is an abundant number, since it is smaller than the sum of its proper divisors (1725157665).

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

1397223135 is a wasteful number, since it uses less digits than its factorization.

1397223135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1132 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 1397223135 is about 37379.4480296325. The cubic root of 1397223135 is about 1117.9488220125.

The spelling of 1397223135 in words is "one billion, three hundred ninety-seven million, two hundred twenty-three thousand, one hundred thirty-five".