70431361 has 32 divisors (see below), whose sum is σ = 95993856. Its totient is φ = 49896000.

The previous prime is 70431301. The next prime is 70431367. The reversal of 70431361 is 16313407.

It is not a de Polignac number, because 70431361 - 2¹³ = 70423169 is a prime.

It is a super-2 number, since 2×70431361² = 9921153224624642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70431367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70576 + ... + 71566.

It is an arithmetic number, because the mean of its divisors is an integer number (2999808).

Almost surely, 2^70431361 is an apocalyptic number.

70431361 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

70431361 is a deficient number, since it is larger than the sum of its proper divisors (25562495).

70431361 is a wasteful number, since it uses less digits than its factorization.

70431361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 70431361 is about 8392.3394235457. The cubic root of 70431361 is about 412.9733502181.

Adding to 70431361 its reverse (16313407), we get a palindrome (86744768).

The spelling of 70431361 in words is "seventy million, four hundred thirty-one thousand, three hundred sixty-one".