1397306234 has 4 divisors (see below), whose sum is σ = 2095959354. Its totient is φ = 698653116.

The previous prime is 1397306167. The next prime is 1397306237. The reversal of 1397306234 is 4326037931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4326037931 = 331 ⋅13069601.

It can be written as a sum of positive squares in only one way, i.e., 933119209 + 464187025 = 30547^2 + 21545^2 .

It is a super-3 number, since 3×1397306234³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1397306237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349326557 + ... + 349326560.

Almost surely, 2^1397306234 is an apocalyptic number.

1397306234 is a deficient number, since it is larger than the sum of its proper divisors (698653120).

1397306234 is an equidigital number, since it uses as much as digits as its factorization.

1397306234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698653119.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 1397306234 is about 37380.5595731257. The cubic root of 1397306234 is about 1117.9709846829.

The spelling of 1397306234 in words is "one billion, three hundred ninety-seven million, three hundred six thousand, two hundred thirty-four".