70651131 has 4 divisors (see below), whose sum is σ = 94201512. Its totient is φ = 47100752.

The previous prime is 70651129. The next prime is 70651183. The reversal of 70651131 is 13115607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13115607 = 3 ⋅4371869.

It is a cyclic number.

It is not a de Polignac number, because 70651131 - 2¹ = 70651129 is a prime.

It is a super-2 number, since 2×70651131² = 9983164623158322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70651111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11775186 + ... + 11775191.

It is an arithmetic number, because the mean of its divisors is an integer number (23550378).

Almost surely, 2^70651131 is an apocalyptic number.

70651131 is a deficient number, since it is larger than the sum of its proper divisors (23550381).

70651131 is a wasteful number, since it uses less digits than its factorization.

70651131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23550380.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 70651131 is about 8405.4227139389. The cubic root of 70651131 is about 413.4024437133.

Adding to 70651131 its reverse (13115607), we get a palindrome (83766738).

The spelling of 70651131 in words is "seventy million, six hundred fifty-one thousand, one hundred thirty-one".