1268912312 has 8 divisors (see below), whose sum is σ = 2379210600. Its totient is φ = 634456152.

The previous prime is 1268912303. The next prime is 1268912363. The reversal of 1268912312 is 2132198621.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1268912312² = 3220276911090370688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79307012 + ... + 79307027.

It is an arithmetic number, because the mean of its divisors is an integer number (297401325).

Almost surely, 2^1268912312 is an apocalyptic number.

It is an amenable number.

1268912312 is a deficient number, since it is larger than the sum of its proper divisors (1110298288).

1268912312 is a wasteful number, since it uses less digits than its factorization.

1268912312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158614045 (or 158614041 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 1268912312 is about 35621.7954628904. The cubic root of 1268912312 is about 1082.6228864506.

The spelling of 1268912312 in words is "one billion, two hundred sixty-eight million, nine hundred twelve thousand, three hundred twelve".