100130312 has 8 divisors (see below), whose sum is σ = 187744350. Its totient is φ = 50065152.

The previous prime is 100130309. The next prime is 100130321. The reversal of 100130312 is 213031001.

It can be written as a sum of positive squares in only one way, i.e., 99480676 + 649636 = 9974^2 + 806^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 100130293 and 100130302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6258137 + ... + 6258152.

Almost surely, 2^100130312 is an apocalyptic number.

It is an amenable number.

100130312 is a deficient number, since it is larger than the sum of its proper divisors (87614038).

100130312 is a wasteful number, since it uses less digits than its factorization.

100130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12516295 (or 12516291 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 100130312 is about 10006.5134787297. The cubic root of 100130312 is about 464.3604140884.

Adding to 100130312 its reverse (213031001), we get a palindrome (313161313).

It can be divided in two parts, 100130 and 312, that multiplied together give a triangular number (31240560 = T₇₉₀₄).

The spelling of 100130312 in words is "one hundred million, one hundred thirty thousand, three hundred twelve".